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Add a new attribute CHECK_TRACE_EVENT_GET_STATE to the backends. When present and True, the code generated by the generate function is wrapped in a conditional that checks whether the event is enabled; this removes the need for repeating the same conditional in multiple backends. Signed-off-by: Tanish Desai <tanishdesai37@gmail.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-ID: <20250929154938.594389-7-pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
79 lines
2.2 KiB
Python
79 lines
2.2 KiB
Python
# SPDX-License-Identifier: GPL-2.0-or-later
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"""
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trace/generated-tracers.h
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"""
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__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
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__copyright__ = "Copyright 2012-2017, 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@redhat.com"
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from tracetool import out
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def generate(events, backend, group):
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header = "trace/control.h"
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out('/* This file is autogenerated by tracetool, do not edit. */',
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'/* SPDX-License-Identifier: GPL-2.0-or-later */',
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'',
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'#ifndef TRACE_%s_GENERATED_TRACERS_H' % group.upper(),
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'#define TRACE_%s_GENERATED_TRACERS_H' % group.upper(),
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'',
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'#include "%s"' % header,
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'')
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for e in events:
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out('extern TraceEvent %(event)s;',
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event = e.api(e.QEMU_EVENT))
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for e in events:
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out('extern uint16_t %s;' % e.api(e.QEMU_DSTATE))
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# static state
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for e in events:
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if 'disable' in e.properties:
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enabled = 0
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else:
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enabled = 1
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out('#define TRACE_%s_ENABLED %d' % (e.name.upper(), enabled))
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backend.generate_begin(events, group)
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for e in events:
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# tracer-specific dstate
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out('',
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'#define %(api)s() ( \\',
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api=e.api(e.QEMU_BACKEND_DSTATE))
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if "disable" not in e.properties:
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backend.generate_backend_dstate(e, group)
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out(' false)')
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out('',
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'static inline void %(api)s(%(args)s)',
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'{',
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api=e.api(),
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args=e.args)
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if "disable" not in e.properties:
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backend.generate(e, group, check_trace_event_get_state=False)
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if backend.check_trace_event_get_state:
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event_id = 'TRACE_' + e.name.upper()
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cond = "trace_event_get_state(%s)" % event_id
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out(' if (%(cond)s) {',
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cond=cond)
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backend.generate(e, group, check_trace_event_get_state=True)
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out(' }')
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out('}')
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backend.generate_end(events, group)
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out('#endif /* TRACE_%s_GENERATED_TRACERS_H */' % group.upper())
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