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     if group == "root":
  23         header = "trace-root.h"
  24     else:
  25         header = "trace.h"
  26
  27     out('/* This file is autogenerated by tracetool, do not edit. */',
  28         '',
  29         '#include "qemu/osdep.h"',
  30         '#include "qemu/module.h"',
  31         '#include "%s"' % header,
  32         '')
  33
  34     for e in events:
  35         out('uint16_t %s;' % e.api(e.QEMU_DSTATE))
  36
  37     for e in events:
  38         if "vcpu" in e.properties:
  39             vcpu_id = 0
  40         else:
  41             vcpu_id = "TRACE_VCPU_EVENT_NONE"
  42         out('TraceEvent %(event)s = {',
  43             '    .id = 0,',
  44             '    .vcpu_id = %(vcpu_id)s,',
  45             '    .name = \"%(name)s\",',
  46             '    .sstate = %(sstate)s,',
  47             '    .dstate = &%(dstate)s ',
  48             '};',
  49             event = e.api(e.QEMU_EVENT),
  50             vcpu_id = vcpu_id,
  51             name = e.name,
  52             sstate = "TRACE_%s_ENABLED" % e.name.upper(),
  53             dstate = e.api(e.QEMU_DSTATE))
  54
  55     out('TraceEvent *%(group)s_trace_events[] = {',
  56         group = group.lower())
  57
  58     for e in events:
  59         out('    &%(event)s,', event = e.api(e.QEMU_EVENT))
  60
  61     out('  NULL,',
  62         '};',
  63         '')
  64
  65     out('static void trace_%(group)s_register_events(void)',
  66         '{',
  67         '    trace_event_register_group(%(group)s_trace_events);',
  68         '}',
  69         'trace_init(trace_%(group)s_register_events)',
  70         group = group.lower())
  71
  72     backend.generate_begin(active_events, group)
  73     for event in active_events:
  74         backend.generate(event, group)
  75     backend.generate_end(active_events, group)