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| author | Lluís Vilanova <vilanova@ac.upc.edu> | 2013-03-05 14:47:32 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2013-03-28 14:19:57 +0100 |
| commit | 45be2f5d0dcdd314cd0c70a11220e5e09a44d654 (patch) | |
| tree | 1352451c027991b2809a2bcb5e70f1a4b13af334 /trace | |
| parent | 93fba1618ddbbef8bedd8d684cf356586c94bbb1 (diff) | |
| download | qemu-45be2f5d0dcdd314cd0c70a11220e5e09a44d654.zip qemu-45be2f5d0dcdd314cd0c70a11220e5e09a44d654.tar.gz qemu-45be2f5d0dcdd314cd0c70a11220e5e09a44d654.tar.bz2 | |
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 'trace')
| -rw-r--r-- | trace/Makefile.objs | 24 | ||||
| -rw-r--r-- | trace/event-internal.h | 33 |
2 files changed, 56 insertions, 1 deletions
diff --git a/trace/Makefile.objs b/trace/Makefile.objs index dde9d57..156aa25 100644 --- a/trace/Makefile.objs +++ b/trace/Makefile.objs @@ -1,7 +1,29 @@ # -*- mode: makefile -*- ###################################################################### -# Auto-generated header for tracing routines +# Auto-generated event descriptions + +$(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 \ + < $< > $@," GEN $(patsubst %-timestamp,%,$@)") + @cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@) + +$(obj)/generated-events.c: $(obj)/generated-events.c-timestamp +$(obj)/generated-events.c-timestamp: $(SRC_PATH)/trace-events + $(call quiet-command,$(TRACETOOL) \ + --format=events-c \ + --backend=events \ + < $< > $@," GEN $(patsubst %-timestamp,%,$@)") + @cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@) + +util-obj-y += generated-events.o + + +###################################################################### +# Auto-generated tracing routines $(obj)/generated-tracers.h: $(obj)/generated-tracers.h-timestamp @cmp -s $< $@ || cp $< $@ diff --git a/trace/event-internal.h b/trace/event-internal.h new file mode 100644 index 0000000..b2310d9 --- /dev/null +++ b/trace/event-internal.h @@ -0,0 +1,33 @@ +/* + * Interface for configuring and controlling the state of tracing events. + * + * Copyright (C) 2012 Lluís Vilanova <vilanova@ac.upc.edu> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef TRACE__EVENT_INTERNAL_H +#define TRACE__EVENT_INTERNAL_H + +#include "trace/generated-events.h" + + +/** + * TraceEvent: + * @id: Unique event identifier. + * @name: Event name. + * @sstate: Static tracing state. + * @dstate: Dynamic tracing state. + * + * Opaque generic description of a tracing event. + */ +typedef struct TraceEvent { + TraceEventID id; + const char * name; + const bool sstate; + bool dstate; +} TraceEvent; + + +#endif /* TRACE__EVENT_INTERNAL_H */ |