scripts/tracetool/format/c.py

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