xref: /qemu/scripts/tracetool/backend/log.py (revision 6402cbbb) 
1#!/usr/bin/env python
2# -*- coding: utf-8 -*-
3
4"""
5Stderr 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
16from tracetool import out
17
18
19PUBLIC = True
20
21
22def generate_h_begin(events, group):
23    out('#include "qemu/log.h"',
24        '')
25
26
27def 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)
51
52
53def generate_h_backend_dstate(event, group):
54    out('    trace_event_get_state_dynamic_by_id(%(event_id)s) || \\',
55        event_id="TRACE_" + event.name.upper())
56