scripts/tracetool/backend/syslog.py

   1 # -*- coding: utf-8 -*-
   2
   3 """
   4 Syslog built-in backend.
   5 """
   6
   7 __author__     = "Paul Durrant <paul.durrant@citrix.com>"
   8 __copyright__  = "Copyright 2016, Citrix Systems Inc."
   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 PUBLIC = True
  19
  20
  21 def generate_h_begin(events, group):
  22     out('#include <syslog.h>',
  23         '')
  24
  25
  26 def generate_h(event, group):
  27     argnames = ", ".join(event.args.names())
  28     if len(event.args) > 0:
  29         argnames = ", " + argnames
  30
  31     if "vcpu" in event.properties:
  32         # already checked on the generic format code
  33         cond = "true"
  34     else:
  35         cond = "trace_event_get_state(%s)" % ("TRACE_" + event.name.upper())
  36
  37     out('    if (%(cond)s) {',
  38         '#line %(event_lineno)d "%(event_filename)s"',
  39         '        syslog(LOG_INFO, "%(name)s " %(fmt)s %(argnames)s);',
  40         '#line %(out_next_lineno)d "%(out_filename)s"',
  41         '    }',
  42         cond=cond,
  43         event_lineno=event.lineno,
  44         event_filename=event.filename,
  45         name=event.name,
  46         fmt=event.fmt.rstrip("\n"),
  47         argnames=argnames)
  48
  49
  50 def generate_h_backend_dstate(event, group):
  51     out('    trace_event_get_state_dynamic_by_id(%(event_id)s) || \\',
  52         event_id="TRACE_" + event.name.upper())