scripts/tracetool/backend/log.py

   1 #!/usr/bin/env python
   2 # -*- coding: utf-8 -*-
   3
   4 """
   5 Stderr built-in backend.
   6 """
   7
   8 __author__     = "Lluís Vilanova <vilanova@ac.upc.edu>"
   9 __copyright__  = "Copyright 2012-2017, 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 PUBLIC = True
  20
  21
  22 def generate_h_begin(events, group):
  23     out('#include "qemu/log.h"',
  24         '')
  25
  26
  27 def generate_h(event, group):
  28     argnames = ", ".join(event.args.names())
  29     if len(event.args) > 0:
  30         argnames = ", " + argnames
  31
  32     if "vcpu" in event.properties:
  33         # already checked on the generic format code
  34         cond = "true"
  35     else:
  36         cond = "trace_event_get_state(%s)" % ("TRACE_" + event.name.upper())
  37
  38     out('    if (%(cond)s) {',
  39         '        struct timeval _now;',
  40         '        gettimeofday(&_now, NULL);',
  41         '        qemu_log_mask(LOG_TRACE,',
  42         '                      "%%d@%%zd.%%06zd:%(name)s " %(fmt)s "\\n",',
  43         '                      getpid(),',
  44         '                      (size_t)_now.tv_sec, (size_t)_now.tv_usec',
  45         '                      %(argnames)s);',
  46         '    }',
  47         cond=cond,
  48         name=event.name,
  49         fmt=event.fmt.rstrip("\n"),
  50         argnames=argnames)