scripts/tracetool/format/c.py

   1 # -*- coding: utf-8 -*-
   2
   3 """
   4 trace/generated-tracers.c
   5 """
   6
   7 __author__     = "Lluís Vilanova <vilanova@ac.upc.edu>"
   8 __copyright__  = "Copyright 2012-2014, Lluís Vilanova <vilanova@ac.upc.edu>"
   9 __license__    = "GPL version 2 or (at your option) any later version"
  10
  11 __maintainer__ = "Stefan Hajnoczi"
  12 __email__      = "stefanha@redhat.com"
  13
  14
  15 from tracetool import out
  16
  17
  18 def generate(events, backend, group):
  19     active_events = [e for e in events
  20                      if "disable" not in e.properties]
  21
  22     header = "trace-" + group + ".h"
  23
  24     out('/* This file is autogenerated by tracetool, do not edit. */',
  25         '',
  26         '#include "qemu/osdep.h"',
  27         '#include "qemu/module.h"',
  28         '#include "%s"' % header,
  29         '')
  30
  31     for e in events:
  32         out('uint16_t %s;' % e.api(e.QEMU_DSTATE))
  33
  34     for e in events:
  35         if "vcpu" in e.properties:
  36             vcpu_id = 0
  37         else:
  38             vcpu_id = "TRACE_VCPU_EVENT_NONE"
  39         out('TraceEvent %(event)s = {',
  40             '    .id = 0,',
  41             '    .vcpu_id = %(vcpu_id)s,',
  42             '    .name = \"%(name)s\",',
  43             '    .sstate = %(sstate)s,',
  44             '    .dstate = &%(dstate)s ',
  45             '};',
  46             event = e.api(e.QEMU_EVENT),
  47             vcpu_id = vcpu_id,
  48             name = e.name,
  49             sstate = "TRACE_%s_ENABLED" % e.name.upper(),
  50             dstate = e.api(e.QEMU_DSTATE))
  51
  52     out('TraceEvent *%(group)s_trace_events[] = {',
  53         group = group.lower())
  54
  55     for e in events:
  56         out('    &%(event)s,', event = e.api(e.QEMU_EVENT))
  57
  58     out('  NULL,',
  59         '};',
  60         '')
  61
  62     out('static void trace_%(group)s_register_events(void)',
  63         '{',
  64         '    trace_event_register_group(%(group)s_trace_events);',
  65         '}',
  66         'trace_init(trace_%(group)s_register_events)',
  67         group = group.lower())
  68
  69     backend.generate_begin(active_events, group)
  70     for event in active_events:
  71         backend.generate(event, group)
  72     backend.generate_end(active_events, group)