trace: [tracetool] Minimize the amount of per-backend code
Backends now only contain the essential backend-specific code, and most of the work is moved to frontend code. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Lluís Vilanova
Stefan Hajnoczi
parent
ef0bd3bba6
commit
1dad2ce973
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@ -109,14 +109,10 @@ def process(events, log, analyzer):
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if isinstance(log, str):
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log = open(log, 'rb')
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enabled_events = []
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dropped_event = Event.build("Dropped_Event(uint64_t num_events_dropped)")
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edict = {dropped_event_id: dropped_event}
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for e in events:
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if 'disable' not in e.properties:
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enabled_events.append(e)
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for num, event in enumerate(enabled_events):
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for num, event in enumerate(events):
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edict[num] = event
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def build_fn(analyzer, event):
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@ -266,10 +266,7 @@ def generate(fevents, format, backend,
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if not tracetool.backend.exists(backend):
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raise TracetoolError("unknown backend: %s" % backend)
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backend = backend.replace("-", "_")
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if not tracetool.backend.compatible(backend, format):
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raise TracetoolError("backend '%s' not compatible with format '%s'" %
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(backend, format))
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backend = tracetool.backend.Wrapper(backend, format)
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import tracetool.backend.dtrace
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tracetool.backend.dtrace.BINARY = binary
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@ -277,16 +274,4 @@ def generate(fevents, format, backend,
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events = _read_events(fevents)
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if backend == "nop":
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( e.properies.add("disable") for e in events )
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tracetool.format.generate_begin(format, events)
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tracetool.backend.generate("nop", format,
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[ e
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for e in events
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if "disable" in e.properties ])
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tracetool.backend.generate(backend, format,
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[ e
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for e in events
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if "disable" not in e.properties ])
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tracetool.format.generate_end(format, events)
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tracetool.format.generate(events, format, backend)
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@ -30,17 +30,24 @@ PUBLIC If exists and is set to 'True', the backend is considered "public".
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Backend functions
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-----------------
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======== =======================================================================
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Function Description
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======== =======================================================================
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<format> Called to generate the format- and backend-specific code for each of
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the specified events. If the function does not exist, the backend is
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considered not compatible with the given format.
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======== =======================================================================
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All the following functions are optional, and no output will be generated if
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they do not exist.
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=============================== ==============================================
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Function Description
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=============================== ==============================================
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generate_<format>_begin(events) Generate backend- and format-specific file
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header contents.
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generate_<format>_end(events) Generate backend- and format-specific file
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footer contents.
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generate_<format>(event) Generate backend- and format-specific contents
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for the given event.
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=============================== ==============================================
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"""
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__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
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__copyright__ = "Copyright 2012, Lluís Vilanova <vilanova@ac.upc.edu>"
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__copyright__ = "Copyright 2012-2014, Lluís Vilanova <vilanova@ac.upc.edu>"
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__license__ = "GPL version 2 or (at your option) any later version"
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__maintainer__ = "Stefan Hajnoczi"
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@ -91,39 +98,24 @@ def exists(name):
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return tracetool.try_import("tracetool.backend." + name)[1]
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def compatible(backend, format):
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"""Whether a backend is compatible with the given format."""
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if not exists(backend):
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raise ValueError("unknown backend: %s" % backend)
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class Wrapper:
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def __init__(self, backend, format):
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self._backend = backend.replace("-", "_")
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self._format = format.replace("-", "_")
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assert exists(self._backend)
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assert tracetool.format.exists(self._format)
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backend = backend.replace("-", "_")
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format = format.replace("-", "_")
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def _run_function(self, name, *args, **kwargs):
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func = tracetool.try_import("tracetool.backend." + self._backend,
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name % self._format, None)[1]
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if func is not None:
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func(*args, **kwargs)
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if backend == "nop":
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return True
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else:
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func = tracetool.try_import("tracetool.backend." + backend,
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format, None)[1]
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return func is not None
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def generate_begin(self, events):
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self._run_function("generate_%s_begin", events)
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def generate(self, event):
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self._run_function("generate_%s", event)
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def _empty(events):
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pass
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def generate(backend, format, events):
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"""Generate the per-event output for the given (backend, format) pair."""
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if not compatible(backend, format):
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raise ValueError("backend '%s' not compatible with format '%s'" %
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(backend, format))
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backend = backend.replace("-", "_")
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format = format.replace("-", "_")
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if backend == "nop":
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func = tracetool.try_import("tracetool.format." + format,
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"nop", _empty)[1]
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else:
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func = tracetool.try_import("tracetool.backend." + backend,
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format, None)[1]
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func(events)
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def generate_end(self, events):
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self._run_function("generate_%s_end", events)
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@ -21,7 +21,7 @@ PUBLIC = True
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PROBEPREFIX = None
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def _probeprefix():
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def probeprefix():
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if PROBEPREFIX is None:
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raise ValueError("you must set PROBEPREFIX")
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return PROBEPREFIX
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@ -29,81 +29,18 @@ def _probeprefix():
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BINARY = None
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def _binary():
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def binary():
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if BINARY is None:
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raise ValueError("you must set BINARY")
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return BINARY
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def c(events):
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pass
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def h(events):
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def generate_h_begin(events):
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out('#include "trace/generated-tracers-dtrace.h"',
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'')
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for e in events:
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out('static inline void %(api)s(%(args)s) {',
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' QEMU_%(uppername)s(%(argnames)s);',
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'}',
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api = e.api(),
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args = e.args,
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uppername = e.name.upper(),
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argnames = ", ".join(e.args.names()),
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)
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def d(events):
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out('provider qemu {')
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for e in events:
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args = str(e.args)
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# DTrace provider syntax expects foo() for empty
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# params, not foo(void)
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if args == 'void':
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args = ''
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# Define prototype for probe arguments
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out('',
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'probe %(name)s(%(args)s);',
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name = e.name,
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args = args,
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)
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out('',
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'};')
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# Technically 'self' is not used by systemtap yet, but
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# they recommended we keep it in the reserved list anyway
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RESERVED_WORDS = (
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'break', 'catch', 'continue', 'delete', 'else', 'for',
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'foreach', 'function', 'global', 'if', 'in', 'limit',
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'long', 'next', 'probe', 'return', 'self', 'string',
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'try', 'while'
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)
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def stap(events):
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for e in events:
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# Define prototype for probe arguments
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out('probe %(probeprefix)s.%(name)s = process("%(binary)s").mark("%(name)s")',
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'{',
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probeprefix = _probeprefix(),
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name = e.name,
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binary = _binary(),
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)
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i = 1
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if len(e.args) > 0:
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for name in e.args.names():
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# Append underscore to reserved keywords
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if name in RESERVED_WORDS:
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name += '_'
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out(' %s = $arg%d;' % (name, i))
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i += 1
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out('}')
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out()
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def generate_h(event):
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out(' QEMU_%(uppername)s(%(argnames)s);',
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uppername=event.name.upper(),
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argnames=", ".join(event.args.names()))
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@ -1,23 +0,0 @@
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Generic event description.
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This is a dummy backend to establish appropriate frontend/backend compatibility
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checks.
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"""
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__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
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__copyright__ = "Copyright 2012, Lluís Vilanova <vilanova@ac.upc.edu>"
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__license__ = "GPL version 2 or (at your option) any later version"
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__maintainer__ = "Stefan Hajnoczi"
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__email__ = "stefanha@linux.vnet.ibm.com"
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def events_h(events):
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pass
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def events_c(events):
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pass
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@ -19,36 +19,30 @@ from tracetool import out
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PUBLIC = True
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def c(events):
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pass
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def h(events):
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def generate_h_begin(events):
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out('#include "trace/ftrace.h"',
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'#include "trace/control.h"',
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'',
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)
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'')
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for e in events:
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argnames = ", ".join(e.args.names())
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if len(e.args) > 0:
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argnames = ", " + argnames
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out('static inline void trace_%(name)s(%(args)s)',
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'{',
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' char ftrace_buf[MAX_TRACE_STRLEN];',
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' int unused __attribute__ ((unused));',
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' int trlen;',
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' bool _state = trace_event_get_state(%(event_id)s);',
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' if (_state) {',
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' trlen = snprintf(ftrace_buf, MAX_TRACE_STRLEN,',
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' "%(name)s " %(fmt)s "\\n" %(argnames)s);',
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' trlen = MIN(trlen, MAX_TRACE_STRLEN - 1);',
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' unused = write(trace_marker_fd, ftrace_buf, trlen);',
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' }',
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'}',
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name = e.name,
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args = e.args,
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event_id = "TRACE_" + e.name.upper(),
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fmt = e.fmt.rstrip("\n"),
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argnames = argnames,
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)
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def generate_h(event):
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argnames = ", ".join(event.args.names())
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if len(event.args) > 0:
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argnames = ", " + argnames
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out(' {',
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' char ftrace_buf[MAX_TRACE_STRLEN];',
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' int unused __attribute__ ((unused));',
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' int trlen;',
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' if (trace_event_get_state(%(event_id)s)) {',
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' trlen = snprintf(ftrace_buf, MAX_TRACE_STRLEN,',
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' "%(name)s " %(fmt)s "\\n" %(argnames)s);',
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' trlen = MIN(trlen, MAX_TRACE_STRLEN - 1);',
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' unused = write(trace_marker_fd, ftrace_buf, trlen);',
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' }',
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' }',
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name=event.name,
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args=event.args,
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event_id="TRACE_" + event.name.upper(),
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fmt=event.fmt.rstrip("\n"),
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argnames=argnames)
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@ -26,76 +26,74 @@ def is_string(arg):
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else:
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return False
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def c(events):
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def generate_h_begin(events):
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for event in events:
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out('void _simple_%(api)s(%(args)s);',
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api=event.api(),
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args=event.args)
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out('')
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def generate_h(event):
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out(' _simple_%(api)s(%(args)s);',
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api=event.api(),
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args=", ".join(event.args.names()))
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def generate_c_begin(events):
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out('#include "trace.h"',
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'#include "trace/control.h"',
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'#include "trace/simple.h"',
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'')
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def generate_c(event):
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out('void _simple_%(api)s(%(args)s)',
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'{',
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' TraceBufferRecord rec;',
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api=event.api(),
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args=event.args)
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sizes = []
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for type_, name in event.args:
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if is_string(type_):
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out(' size_t arg%(name)s_len = %(name)s ? MIN(strlen(%(name)s), MAX_TRACE_STRLEN) : 0;',
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name=name)
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strsizeinfo = "4 + arg%s_len" % name
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sizes.append(strsizeinfo)
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else:
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sizes.append("8")
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sizestr = " + ".join(sizes)
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if len(event.args) == 0:
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sizestr = '0'
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out('',
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' if (!trace_event_get_state(%(event_id)s)) {',
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' return;',
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' }',
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'',
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)
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' if (trace_record_start(&rec, %(event_id)s, %(size_str)s)) {',
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' return; /* Trace Buffer Full, Event Dropped ! */',
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' }',
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event_id='TRACE_' + event.name.upper(),
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size_str=sizestr)
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for num, event in enumerate(events):
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out('void %(api)s(%(args)s)',
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'{',
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' TraceBufferRecord rec;',
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api = event.api(),
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args = event.args,
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)
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sizes = []
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if len(event.args) > 0:
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for type_, name in event.args:
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# string
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if is_string(type_):
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out(' size_t arg%(name)s_len = %(name)s ? MIN(strlen(%(name)s), MAX_TRACE_STRLEN) : 0;',
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name = name,
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)
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strsizeinfo = "4 + arg%s_len" % name
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sizes.append(strsizeinfo)
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out(' trace_record_write_str(&rec, %(name)s, arg%(name)s_len);',
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name=name)
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# pointer var (not string)
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elif type_.endswith('*'):
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out(' trace_record_write_u64(&rec, (uintptr_t)(uint64_t *)%(name)s);',
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name=name)
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# primitive data type
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else:
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sizes.append("8")
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sizestr = " + ".join(sizes)
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if len(event.args) == 0:
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sizestr = '0'
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out(' trace_record_write_u64(&rec, (uint64_t)%(name)s);',
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name=name)
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out('',
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' TraceEvent *eventp = trace_event_id(%(event_enum)s);',
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' bool _state = trace_event_get_state_dynamic(eventp);',
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' if (!_state) {',
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' return;',
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' }',
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'',
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' if (trace_record_start(&rec, %(event_id)s, %(size_str)s)) {',
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' return; /* Trace Buffer Full, Event Dropped ! */',
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' }',
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event_enum = 'TRACE_' + event.name.upper(),
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event_id = num,
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size_str = sizestr,
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)
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if len(event.args) > 0:
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for type_, name in event.args:
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# string
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if is_string(type_):
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out(' trace_record_write_str(&rec, %(name)s, arg%(name)s_len);',
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name = name,
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)
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# pointer var (not string)
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elif type_.endswith('*'):
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out(' trace_record_write_u64(&rec, (uintptr_t)(uint64_t *)%(name)s);',
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name = name,
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)
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# primitive data type
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else:
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out(' trace_record_write_u64(&rec, (uint64_t)%(name)s);',
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name = name,
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)
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out(' trace_record_finish(&rec);',
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'}',
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'')
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def h(events):
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for event in events:
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out('void %(api)s(%(args)s);',
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api = event.api(),
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args = event.args,
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)
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out(' trace_record_finish(&rec);',
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'}',
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'')
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|
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@ -19,31 +19,21 @@ from tracetool import out
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PUBLIC = True
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def c(events):
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pass
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def h(events):
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def generate_h_begin(events):
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out('#include <stdio.h>',
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'#include "trace/control.h"',
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'',
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)
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'')
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for e in events:
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argnames = ", ".join(e.args.names())
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if len(e.args) > 0:
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argnames = ", " + argnames
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out('static inline void %(api)s(%(args)s)',
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'{',
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' bool _state = trace_event_get_state(%(event_id)s);',
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' if (_state) {',
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' fprintf(stderr, "%(name)s " %(fmt)s "\\n" %(argnames)s);',
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||||
' }',
|
||||
'}',
|
||||
api = e.api(),
|
||||
name = e.name,
|
||||
args = e.args,
|
||||
event_id = "TRACE_" + e.name.upper(),
|
||||
fmt = e.fmt.rstrip("\n"),
|
||||
argnames = argnames,
|
||||
)
|
||||
def generate_h(event):
|
||||
argnames = ", ".join(event.args.names())
|
||||
if len(event.args) > 0:
|
||||
argnames = ", " + argnames
|
||||
|
||||
out(' if (trace_event_get_state(%(event_id)s)) {',
|
||||
' fprintf(stderr, "%(name)s " %(fmt)s "\\n" %(argnames)s);',
|
||||
' }',
|
||||
event_id="TRACE_" + event.name.upper(),
|
||||
name=event.name,
|
||||
fmt=event.fmt.rstrip("\n"),
|
||||
argnames=argnames)
|
||||
|
|
|
|||
|
|
@ -18,66 +18,18 @@ from tracetool import out
|
|||
|
||||
PUBLIC = True
|
||||
|
||||
def c(events):
|
||||
pass
|
||||
|
||||
|
||||
def h(events):
|
||||
def generate_h_begin(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 %(api)s(%(args)s)',
|
||||
'{',
|
||||
' tracepoint(qemu, %(name)s%(tp_args)s);',
|
||||
'}',
|
||||
'',
|
||||
api = e.api()
|
||||
name = e.name,
|
||||
args = e.args,
|
||||
tp_args = argnames,
|
||||
)
|
||||
|
||||
def ust_events_c(events):
|
||||
pass
|
||||
def generate_h(event):
|
||||
argnames = ", ".join(event.args.names())
|
||||
if len(event.args) > 0:
|
||||
argnames = ", " + argnames
|
||||
|
||||
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,
|
||||
)
|
||||
out(' tracepoint(qemu, %(name)s%(tp_args)s);',
|
||||
name=event.name,
|
||||
tp_args=argnames)
|
||||
|
|
|
|||
|
|
@ -20,17 +20,12 @@ All formats must generate their contents through the 'tracetool.out' routine.
|
|||
Format functions
|
||||
----------------
|
||||
|
||||
All the following functions are optional, and no output will be generated if
|
||||
they do not exist.
|
||||
|
||||
======== =======================================================================
|
||||
======== ==================================================================
|
||||
Function Description
|
||||
======== =======================================================================
|
||||
begin Called to generate the format-specific file header.
|
||||
end Called to generate the format-specific file footer.
|
||||
nop Called to generate the per-event contents when the event is disabled or
|
||||
the selected backend is 'nop'.
|
||||
======== =======================================================================
|
||||
======== ==================================================================
|
||||
generate Called to generate a format-specific file.
|
||||
======== ==================================================================
|
||||
|
||||
"""
|
||||
|
||||
__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
|
||||
|
|
@ -79,25 +74,12 @@ def exists(name):
|
|||
return tracetool.try_import("tracetool.format." + name)[1]
|
||||
|
||||
|
||||
def _empty(events):
|
||||
pass
|
||||
|
||||
def generate_begin(name, events):
|
||||
"""Generate the header of the format-specific file."""
|
||||
if not exists(name):
|
||||
raise ValueError("unknown format: %s" % name)
|
||||
|
||||
name = name.replace("-", "_")
|
||||
func = tracetool.try_import("tracetool.format." + name,
|
||||
"begin", _empty)[1]
|
||||
func(events)
|
||||
|
||||
def generate_end(name, events):
|
||||
"""Generate the footer of the format-specific file."""
|
||||
if not exists(name):
|
||||
raise ValueError("unknown format: %s" % name)
|
||||
|
||||
name = name.replace("-", "_")
|
||||
func = tracetool.try_import("tracetool.format." + name,
|
||||
"end", _empty)[1]
|
||||
func(events)
|
||||
def generate(events, format, backend):
|
||||
if not exists(format):
|
||||
raise ValueError("unknown format: %s" % format)
|
||||
format = format.replace("-", "_")
|
||||
func = tracetool.try_import("tracetool.format." + format,
|
||||
"generate")[1]
|
||||
if func is None:
|
||||
raise AttributeError("format has no 'generate': %s" % format)
|
||||
func(events, backend)
|
||||
|
|
|
|||
|
|
@ -16,5 +16,13 @@ __email__ = "stefanha@linux.vnet.ibm.com"
|
|||
from tracetool import out
|
||||
|
||||
|
||||
def begin(events):
|
||||
out('/* This file is autogenerated by tracetool, do not edit. */')
|
||||
def generate(events, backend):
|
||||
events = [e for e in events
|
||||
if "disable" not in e.properties]
|
||||
|
||||
out('/* This file is autogenerated by tracetool, do not edit. */',
|
||||
'')
|
||||
backend.generate_begin(events)
|
||||
for event in events:
|
||||
backend.generate(event)
|
||||
backend.generate_end(events)
|
||||
|
|
|
|||
|
|
@ -16,5 +16,27 @@ __email__ = "stefanha@linux.vnet.ibm.com"
|
|||
from tracetool import out
|
||||
|
||||
|
||||
def begin(events):
|
||||
out('/* This file is autogenerated by tracetool, do not edit. */')
|
||||
def generate(events, backend):
|
||||
events = [e for e in events
|
||||
if "disable" not in e.properties]
|
||||
|
||||
out('/* This file is autogenerated by tracetool, do not edit. */'
|
||||
'',
|
||||
'provider qemu {')
|
||||
|
||||
for e in events:
|
||||
args = str(e.args)
|
||||
|
||||
# DTrace provider syntax expects foo() for empty
|
||||
# params, not foo(void)
|
||||
if args == 'void':
|
||||
args = ''
|
||||
|
||||
# Define prototype for probe arguments
|
||||
out('',
|
||||
'probe %(name)s(%(args)s);',
|
||||
name=e.name,
|
||||
args=args)
|
||||
|
||||
out('',
|
||||
'};')
|
||||
|
|
|
|||
|
|
@ -16,14 +16,13 @@ __email__ = "stefanha@linux.vnet.ibm.com"
|
|||
from tracetool import out
|
||||
|
||||
|
||||
def begin(events):
|
||||
def generate(events, backend):
|
||||
out('/* This file is autogenerated by tracetool, do not edit. */',
|
||||
'',
|
||||
'#include "trace.h"',
|
||||
'#include "trace/generated-events.h"',
|
||||
'#include "trace/control.h"',
|
||||
'',
|
||||
)
|
||||
'')
|
||||
|
||||
out('TraceEvent trace_events[TRACE_EVENT_COUNT] = {')
|
||||
|
||||
|
|
@ -31,9 +30,7 @@ def begin(events):
|
|||
out(' { .id = %(id)s, .name = \"%(name)s\", .sstate = %(sstate)s, .dstate = 0 },',
|
||||
id = "TRACE_" + e.name.upper(),
|
||||
name = e.name,
|
||||
sstate = "TRACE_%s_ENABLED" % e.name.upper(),
|
||||
)
|
||||
sstate = "TRACE_%s_ENABLED" % e.name.upper())
|
||||
|
||||
out('};',
|
||||
'',
|
||||
)
|
||||
'')
|
||||
|
|
|
|||
|
|
@ -16,15 +16,14 @@ __email__ = "stefanha@linux.vnet.ibm.com"
|
|||
from tracetool import out
|
||||
|
||||
|
||||
def begin(events):
|
||||
def generate(events, backend):
|
||||
out('/* This file is autogenerated by tracetool, do not edit. */',
|
||||
'',
|
||||
'#ifndef TRACE__GENERATED_EVENTS_H',
|
||||
'#define TRACE__GENERATED_EVENTS_H',
|
||||
'',
|
||||
'#include <stdbool.h>',
|
||||
''
|
||||
)
|
||||
'')
|
||||
|
||||
# event identifiers
|
||||
out('typedef enum {')
|
||||
|
|
@ -33,8 +32,7 @@ def begin(events):
|
|||
out(' TRACE_%s,' % e.name.upper())
|
||||
|
||||
out(' TRACE_EVENT_COUNT',
|
||||
'} TraceEventID;',
|
||||
)
|
||||
'} TraceEventID;')
|
||||
|
||||
# static state
|
||||
for e in events:
|
||||
|
|
@ -46,5 +44,4 @@ def begin(events):
|
|||
|
||||
out('#include "trace/event-internal.h"',
|
||||
'',
|
||||
'#endif /* TRACE__GENERATED_EVENTS_H */',
|
||||
)
|
||||
'#endif /* TRACE__GENERATED_EVENTS_H */')
|
||||
|
|
|
|||
|
|
@ -16,23 +16,29 @@ __email__ = "stefanha@linux.vnet.ibm.com"
|
|||
from tracetool import out
|
||||
|
||||
|
||||
def begin(events):
|
||||
def generate(events, backend):
|
||||
out('/* This file is autogenerated by tracetool, do not edit. */',
|
||||
'',
|
||||
'#ifndef TRACE__GENERATED_TRACERS_H',
|
||||
'#define TRACE__GENERATED_TRACERS_H',
|
||||
'',
|
||||
'#include "qemu-common.h"')
|
||||
'#include "qemu-common.h"',
|
||||
'')
|
||||
|
||||
def end(events):
|
||||
out('#endif /* TRACE__GENERATED_TRACERS_H */')
|
||||
backend.generate_begin(events)
|
||||
|
||||
def nop(events):
|
||||
for e in events:
|
||||
out('',
|
||||
'static inline void %(api)s(%(args)s)',
|
||||
'{',
|
||||
'}',
|
||||
api = e.api(),
|
||||
args = e.args,
|
||||
)
|
||||
api=e.api(),
|
||||
args=e.args)
|
||||
|
||||
if "disable" not in e.properties:
|
||||
backend.generate(e)
|
||||
|
||||
out('}')
|
||||
|
||||
backend.generate_end(events)
|
||||
|
||||
out('#endif /* TRACE__GENERATED_TRACERS_H */')
|
||||
|
|
|
|||
|
|
@ -6,7 +6,7 @@ Generate .stp file (DTrace with SystemTAP only).
|
|||
"""
|
||||
|
||||
__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
|
||||
__copyright__ = "Copyright 2012, 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"
|
||||
|
|
@ -14,7 +14,43 @@ __email__ = "stefanha@linux.vnet.ibm.com"
|
|||
|
||||
|
||||
from tracetool import out
|
||||
from tracetool.backend.dtrace import binary, probeprefix
|
||||
|
||||
|
||||
def begin(events):
|
||||
out('/* This file is autogenerated by tracetool, do not edit. */')
|
||||
# Technically 'self' is not used by systemtap yet, but
|
||||
# they recommended we keep it in the reserved list anyway
|
||||
RESERVED_WORDS = (
|
||||
'break', 'catch', 'continue', 'delete', 'else', 'for',
|
||||
'foreach', 'function', 'global', 'if', 'in', 'limit',
|
||||
'long', 'next', 'probe', 'return', 'self', 'string',
|
||||
'try', 'while'
|
||||
)
|
||||
|
||||
|
||||
def generate(events, backend):
|
||||
events = [e for e in events
|
||||
if "disable" not in e.properties]
|
||||
|
||||
out('/* This file is autogenerated by tracetool, do not edit. */',
|
||||
'')
|
||||
|
||||
for e in events:
|
||||
# Define prototype for probe arguments
|
||||
out('probe %(probeprefix)s.%(name)s = process("%(binary)s").mark("%(name)s")',
|
||||
'{',
|
||||
probeprefix=probeprefix(),
|
||||
name=e.name,
|
||||
binary=binary())
|
||||
|
||||
i = 1
|
||||
if len(e.args) > 0:
|
||||
for name in e.args.names():
|
||||
# Append underscore to reserved keywords
|
||||
if name in RESERVED_WORDS:
|
||||
name += '_'
|
||||
out(' %s = $arg%d;' % (name, i))
|
||||
i += 1
|
||||
|
||||
out('}')
|
||||
|
||||
out()
|
||||
|
|
|
|||
|
|
@ -16,7 +16,10 @@ __email__ = "stefanha@redhat.com"
|
|||
from tracetool import out
|
||||
|
||||
|
||||
def begin(events):
|
||||
def generate(events, backend):
|
||||
events = [e for e in events
|
||||
if "disabled" not in e.properties]
|
||||
|
||||
out('/* This file is autogenerated by tracetool, do not edit. */',
|
||||
'',
|
||||
'#define TRACEPOINT_DEFINE',
|
||||
|
|
|
|||
|
|
@ -16,7 +16,10 @@ __email__ = "stefanha@redhat.com"
|
|||
from tracetool import out
|
||||
|
||||
|
||||
def begin(events):
|
||||
def generate(events, backend):
|
||||
events = [e for e in events
|
||||
if "disabled" not in e.properties]
|
||||
|
||||
out('/* This file is autogenerated by tracetool, do not edit. */',
|
||||
'',
|
||||
'#undef TRACEPOINT_PROVIDER',
|
||||
|
|
@ -50,7 +53,40 @@ def begin(events):
|
|||
'#endif',
|
||||
'')
|
||||
|
||||
def end(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)
|
||||
|
||||
out('#endif /* TRACE__GENERATED_UST_H */',
|
||||
'',
|
||||
'/* This part must be outside ifdef protection */',
|
||||
|
|
|
|||
|
|
@ -31,7 +31,7 @@ $(obj)/generated-events.h: $(obj)/generated-events.h-timestamp
|
|||
$(obj)/generated-events.h-timestamp: $(SRC_PATH)/trace-events
|
||||
$(call quiet-command,$(TRACETOOL) \
|
||||
--format=events-h \
|
||||
--backend=events \
|
||||
--backend=$(TRACE_BACKEND) \
|
||||
< $< > $@," GEN $(patsubst %-timestamp,%,$@)")
|
||||
@cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@)
|
||||
|
||||
|
|
@ -39,7 +39,7 @@ $(obj)/generated-events.c: $(obj)/generated-events.c-timestamp $(BUILD_DIR)/conf
|
|||
$(obj)/generated-events.c-timestamp: $(SRC_PATH)/trace-events
|
||||
$(call quiet-command,$(TRACETOOL) \
|
||||
--format=events-c \
|
||||
--backend=events \
|
||||
--backend=$(TRACE_BACKEND) \
|
||||
< $< > $@," GEN $(patsubst %-timestamp,%,$@)")
|
||||
@cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@)
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue