1# -*- coding: utf-8 -*-
2
3"""
4Syslog 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
15from tracetool import out
16
17
18PUBLIC = True
19
20
21def generate_h_begin(events, group):
22    out('#include <syslog.h>',
23        '')
24
25
26def 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        '        syslog(LOG_INFO, "%(name)s " %(fmt)s %(argnames)s);',
39        '    }',
40        cond=cond,
41        name=event.name,
42        fmt=event.fmt.rstrip("\n"),
43        argnames=argnames)
44
45
46def generate_h_backend_dstate(event, group):
47    out('    trace_event_get_state_dynamic_by_id(%(event_id)s) || \\',
48        event_id="TRACE_" + event.name.upper())
49