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):
  20     events = [e for e in events
  21               if "disabled" not in e.properties]
  22
  23     out('/* This file is autogenerated by tracetool, do not edit. */',
  24         '',
  25         '#undef TRACEPOINT_PROVIDER',
  26         '#define TRACEPOINT_PROVIDER qemu',
  27         '',
  28         '#undef TRACEPOINT_INCLUDE_FILE',
  29         '#define TRACEPOINT_INCLUDE_FILE ./generated-ust-provider.h',
  30         '',
  31         '#if !defined (TRACE__GENERATED_UST_H) || defined(TRACEPOINT_HEADER_MULTI_READ)',
  32         '#define TRACE__GENERATED_UST_H',
  33         '',
  34         '#include "qemu-common.h"',
  35         '#include <lttng/tracepoint.h>',
  36         '',
  37         '/*',
  38         ' * LTTng ust 2.0 does not allow you to use TP_ARGS(void) for tracepoints',
  39         ' * requiring no arguments. We define these macros introduced in more recent'
  40         ' * versions of LTTng ust as a workaround',
  41         ' */',
  42         '#ifndef _TP_EXPROTO1',
  43         '#define _TP_EXPROTO1(a)               void',
  44         '#endif',
  45         '#ifndef _TP_EXDATA_PROTO1',
  46         '#define _TP_EXDATA_PROTO1(a)          void *__tp_data',
  47         '#endif',
  48         '#ifndef _TP_EXDATA_VAR1',
  49         '#define _TP_EXDATA_VAR1(a)            __tp_data',
  50         '#endif',
  51         '#ifndef _TP_EXVAR1',
  52         '#define _TP_EXVAR1(a)',
  53         '#endif',
  54         '')
  55
  56     for e in events:
  57         if len(e.args) > 0:
  58             out('TRACEPOINT_EVENT(',
  59                 '   qemu,',
  60                 '   %(name)s,',
  61                 '   TP_ARGS(%(args)s),',
  62                 '   TP_FIELDS(',
  63                 name=e.name,
  64                 args=", ".join(", ".join(i) for i in e.args))
  65
  66             types = e.args.types()
  67             names = e.args.names()
  68             fmts = e.formats()
  69             for t,n,f in zip(types, names, fmts):
  70                 if ('char *' in t) or ('char*' in t):
  71                     out('       ctf_string(' + n + ', ' + n + ')')
  72                 elif ("%p" in f) or ("x" in f) or ("PRIx" in f):
  73                     out('       ctf_integer_hex('+ t + ', ' + n + ', ' + n + ')')
  74                 elif ("ptr" in t) or ("*" in t):
  75                     out('       ctf_integer_hex('+ t + ', ' + n + ', ' + n + ')')
  76                 elif ('int' in t) or ('long' in t) or ('unsigned' in t) or ('size_t' in t):
  77                     out('       ctf_integer(' + t + ', ' + n + ', ' + n + ')')
  78                 elif ('double' in t) or ('float' in t):
  79                     out('       ctf_float(' + t + ', ' + n + ', ' + n + ')')
  80                 elif ('void *' in t) or ('void*' in t):
  81                     out('       ctf_integer_hex(unsigned long, ' + n + ', ' + n + ')')
  82
  83             out('   )',
  84                 ')',
  85                 '')
  86
  87         else:
  88             out('TRACEPOINT_EVENT(',
  89                 '   qemu,',
  90                 '   %(name)s,',
  91                 '   TP_ARGS(void),',
  92                 '   TP_FIELDS()',
  93                 ')',
  94                 '',
  95                 name=e.name)
  96
  97     out('#endif /* TRACE__GENERATED_UST_H */',
  98         '',
  99         '/* This part must be outside ifdef protection */',
 100         '#include <lttng/tracepoint-event.h>')