scripts/tracetool/format/ust_events_h.py

   1 #!/usr/bin/env python
   2 # -*- coding: utf-8 -*-
   3
   4 """
   5 trace/generated-ust-provider.h
   6 """
   7
   8 __author__     = "Mohamad Gebai <mohamad.gebai@polymtl.ca>"
   9 __copyright__  = "Copyright 2012, Mohamad Gebai <mohamad.gebai@polymtl.ca>"
  10 __license__    = "GPL version 2 or (at your option) any later version"
  11
  12 __maintainer__ = "Stefan Hajnoczi"
  13 __email__      = "stefanha@redhat.com"
  14
  15
  16 from tracetool import out
  17
  18
  19 def generate(events, backend, group):
  20     events = [e for e in events
  21               if "disabled" not in e.properties]
  22
  23     if group == "all":
  24         include = "trace-ust-all.h"
  25     else:
  26         include = "trace-ust.h"
  27
  28     out('/* This file is autogenerated by tracetool, do not edit. */',
  29         '',
  30         '#undef TRACEPOINT_PROVIDER',
  31         '#define TRACEPOINT_PROVIDER qemu',
  32         '',
  33         '#undef TRACEPOINT_INCLUDE_FILE',
  34         '#define TRACEPOINT_INCLUDE_FILE ./%s' % include,
  35         '',
  36         '#if !defined (TRACE_%s_GENERATED_UST_H) || \\'  % group.upper(),
  37         '     defined(TRACEPOINT_HEADER_MULTI_READ)',
  38         '#define TRACE_%s_GENERATED_UST_H' % group.upper(),
  39         '',
  40         '#include "qemu-common.h"',
  41         '#include <lttng/tracepoint.h>',
  42         '',
  43         '/*',
  44         ' * LTTng ust 2.0 does not allow you to use TP_ARGS(void) for tracepoints',
  45         ' * requiring no arguments. We define these macros introduced in more recent'
  46         ' * versions of LTTng ust as a workaround',
  47         ' */',
  48         '#ifndef _TP_EXPROTO1',
  49         '#define _TP_EXPROTO1(a)               void',
  50         '#endif',
  51         '#ifndef _TP_EXDATA_PROTO1',
  52         '#define _TP_EXDATA_PROTO1(a)          void *__tp_data',
  53         '#endif',
  54         '#ifndef _TP_EXDATA_VAR1',
  55         '#define _TP_EXDATA_VAR1(a)            __tp_data',
  56         '#endif',
  57         '#ifndef _TP_EXVAR1',
  58         '#define _TP_EXVAR1(a)',
  59         '#endif',
  60         '')
  61
  62     for e in events:
  63         if len(e.args) > 0:
  64             out('TRACEPOINT_EVENT(',
  65                 '   qemu,',
  66                 '   %(name)s,',
  67                 '   TP_ARGS(%(args)s),',
  68                 '   TP_FIELDS(',
  69                 name=e.name,
  70                 args=", ".join(", ".join(i) for i in e.args))
  71
  72             types = e.args.types()
  73             names = e.args.names()
  74             fmts = e.formats()
  75             for t,n,f in zip(types, names, fmts):
  76                 if ('char *' in t) or ('char*' in t):
  77                     out('       ctf_string(' + n + ', ' + n + ')')
  78                 elif ("%p" in f) or ("x" in f) or ("PRIx" in f):
  79                     out('       ctf_integer_hex('+ t + ', ' + n + ', ' + n + ')')
  80                 elif ("ptr" in t) or ("*" in t):
  81                     out('       ctf_integer_hex('+ t + ', ' + n + ', ' + n + ')')
  82                 elif ('int' in t) or ('long' in t) or ('unsigned' in t) \
  83                         or ('size_t' in t) or ('bool' in t):
  84                     out('       ctf_integer(' + t + ', ' + n + ', ' + n + ')')
  85                 elif ('double' in t) or ('float' in t):
  86                     out('       ctf_float(' + t + ', ' + n + ', ' + n + ')')
  87                 elif ('void *' in t) or ('void*' in t):
  88                     out('       ctf_integer_hex(unsigned long, ' + n + ', ' + n + ')')
  89
  90             out('   )',
  91                 ')',
  92                 '')
  93
  94         else:
  95             out('TRACEPOINT_EVENT(',
  96                 '   qemu,',
  97                 '   %(name)s,',
  98                 '   TP_ARGS(void),',
  99                 '   TP_FIELDS()',
 100                 ')',
 101                 '',
 102                 name=e.name)
 103
 104     out('#endif /* TRACE_%s_GENERATED_UST_H */' % group.upper(),
 105         '',
 106         '/* This part must be outside ifdef protection */',
 107         '#include <lttng/tracepoint-event.h>')