scripts/tracetool/format/ust_events_h.py

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