scripts/tracetool/backend/simple.py

   1 #!/usr/bin/env python
   2 # -*- coding: utf-8 -*-
   3
   4 """
   5 Simple built-in backend.
   6 """
   7
   8 __author__     = "Lluís Vilanova <vilanova@ac.upc.edu>"
   9 __copyright__  = "Copyright 2012, Lluís Vilanova <vilanova@ac.upc.edu>"
  10 __license__    = "GPL version 2 or (at your option) any later version"
  11
  12 __maintainer__ = "Stefan Hajnoczi"
  13 __email__      = "stefanha@linux.vnet.ibm.com"
  14
  15
  16 from tracetool import out
  17
  18
  19 def c(events):
  20     out('#include "trace.h"',
  21         '',
  22         'TraceEvent trace_list[] = {')
  23
  24     for e in events:
  25         out('{.tp_name = "%(name)s", .state=0},',
  26             name = e.name,
  27             )
  28
  29     out('};')
  30
  31 def h(events):
  32     out('#include "trace/simple.h"',
  33         '')
  34
  35     for num, e in enumerate(events):
  36         if len(e.args):
  37             argstr = e.args.names()
  38             arg_prefix = ', (uint64_t)(uintptr_t)'
  39             cast_args = arg_prefix + arg_prefix.join(argstr)
  40             simple_args = (str(num) + cast_args)
  41         else:
  42             simple_args = str(num)
  43
  44         out('static inline void trace_%(name)s(%(args)s)',
  45             '{',
  46             '    trace%(argc)d(%(trace_args)s);',
  47             '}',
  48             name = e.name,
  49             args = e.args,
  50             argc = len(e.args),
  51             trace_args = simple_args,
  52             )
  53
  54     out('#define NR_TRACE_EVENTS %d' % len(events))
  55     out('extern TraceEvent trace_list[NR_TRACE_EVENTS];')