scripts/tracetool/backend/log.py

   1 # -*- coding: utf-8 -*-
   2
   3 """
   4 Stderr built-in backend.
   5 """
   6
   7 __author__     = "Lluís Vilanova <vilanova@ac.upc.edu>"
   8 __copyright__  = "Copyright 2012-2017, Lluís Vilanova <vilanova@ac.upc.edu>"
   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 import os.path
  16
  17 from tracetool import out
  18
  19
  20 PUBLIC = True
  21
  22
  23 def generate_h_begin(events, group):
  24     out('#include "qemu/log-for-trace.h"',
  25         '#include "qemu/error-report.h"',
  26         '')
  27
  28
  29 def generate_h(event, group):
  30     argnames = ", ".join(event.args.names())
  31     if len(event.args) > 0:
  32         argnames = ", " + argnames
  33
  34     if "vcpu" in event.properties:
  35         # already checked on the generic format code
  36         cond = "true"
  37     else:
  38         cond = "trace_event_get_state(%s)" % ("TRACE_" + event.name.upper())
  39
  40     out('    if (%(cond)s && qemu_loglevel_mask(LOG_TRACE)) {',
  41         '        if (message_with_timestamp) {',
  42         '            struct timeval _now;',
  43         '            gettimeofday(&_now, NULL);',
  44         '#line %(event_lineno)d "%(event_filename)s"',
  45         '            qemu_log("%%d@%%zu.%%06zu:%(name)s " %(fmt)s "\\n",',
  46         '                     qemu_get_thread_id(),',
  47         '                     (size_t)_now.tv_sec, (size_t)_now.tv_usec',
  48         '                     %(argnames)s);',
  49         '#line %(out_next_lineno)d "%(out_filename)s"',
  50         '        } else {',
  51         '#line %(event_lineno)d "%(event_filename)s"',
  52         '            qemu_log("%(name)s " %(fmt)s "\\n"%(argnames)s);',
  53         '#line %(out_next_lineno)d "%(out_filename)s"',
  54         '        }',
  55         '    }',
  56         cond=cond,
  57         event_lineno=event.lineno,
  58         event_filename=os.path.relpath(event.filename),
  59         name=event.name,
  60         fmt=event.fmt.rstrip("\n"),
  61         argnames=argnames)
  62
  63
  64 def generate_h_backend_dstate(event, group):
  65     out('    trace_event_get_state_dynamic_by_id(%(event_id)s) || \\',
  66         event_id="TRACE_" + event.name.upper())