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authorLluís Vilanova <vilanova@ac.upc.edu>2013-03-05 14:47:32 +0100
committerStefan Hajnoczi <stefanha@redhat.com>2013-03-28 14:19:57 +0100
commit45be2f5d0dcdd314cd0c70a11220e5e09a44d654 (patch)
tree1352451c027991b2809a2bcb5e70f1a4b13af334 /scripts/tracetool
parent93fba1618ddbbef8bedd8d684cf356586c94bbb1 (diff)
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trace: Provide a generic tracing event descriptor
Uses tracetool to generate a backend-independent tracing event description (struct TraceEvent). The values for such structure are generated with the non-public "events" backend ("events-c" frontend). The generation of the defines to check if an event is statically enabled is also moved to the "events" backend ("events-h" frontend). Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'scripts/tracetool')
-rw-r--r--scripts/tracetool/backend/events.py23
-rw-r--r--scripts/tracetool/format/events_c.py39
-rw-r--r--scripts/tracetool/format/events_h.py50
-rw-r--r--scripts/tracetool/format/h.py9
4 files changed, 113 insertions, 8 deletions
diff --git a/scripts/tracetool/backend/events.py b/scripts/tracetool/backend/events.py
new file mode 100644
index 0000000..5afce3e
--- /dev/null
+++ b/scripts/tracetool/backend/events.py
@@ -0,0 +1,23 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+Generic event description.
+
+This is a dummy backend to establish appropriate frontend/backend compatibility
+checks.
+"""
+
+__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"
+
+
+def events_h(events):
+ pass
+
+def events_c(events):
+ pass
diff --git a/scripts/tracetool/format/events_c.py b/scripts/tracetool/format/events_c.py
new file mode 100644
index 0000000..d670ec8
--- /dev/null
+++ b/scripts/tracetool/format/events_c.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+Generate .c for event description.
+"""
+
+__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 begin(events):
+ 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] = {')
+
+ for e in 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(),
+ )
+
+ out('};',
+ '',
+ )
diff --git a/scripts/tracetool/format/events_h.py b/scripts/tracetool/format/events_h.py
new file mode 100644
index 0000000..d30ccea
--- /dev/null
+++ b/scripts/tracetool/format/events_h.py
@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+Generate .h for event description.
+"""
+
+__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 begin(events):
+ 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 {')
+
+ for e in events:
+ out(' TRACE_%s,' % e.name.upper())
+
+ out(' TRACE_EVENT_COUNT',
+ '} TraceEventID;',
+ )
+
+ # static state
+ for e in events:
+ if 'disable' in e.properties:
+ enabled = 0
+ else:
+ enabled = 1
+ out('#define TRACE_%s_ENABLED %d' % (e.name.upper(), enabled))
+
+ out('#include "trace/event-internal.h"',
+ '',
+ '#endif /* TRACE__GENERATED_EVENTS_H */',
+ )
diff --git a/scripts/tracetool/format/h.py b/scripts/tracetool/format/h.py
index 9a58de1..93132fc 100644
--- a/scripts/tracetool/format/h.py
+++ b/scripts/tracetool/format/h.py
@@ -25,14 +25,7 @@ def begin(events):
'#include "qemu-common.h"')
def end(events):
- for e in events:
- if "disable" in e.properties:
- enabled = 0
- else:
- enabled = 1
- out('#define TRACE_%s_ENABLED %d' % (e.name.upper(), enabled))
- out('',
- '#endif /* TRACE__GENERATED_TRACERS_H */')
+ out('#endif /* TRACE__GENERATED_TRACERS_H */')
def nop(events):
for e in events: