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
15import os.path
16
17from tracetool import out
18
19
20PUBLIC = True
21
22
23def generate_h_begin(events, group):
24    out('#include <syslog.h>',
25        '')
26
27
28def generate_h(event, group):
29    argnames = ", ".join(event.args.names())
30    if len(event.args) > 0:
31        argnames = ", " + argnames
32
33    if "vcpu" in event.properties:
34        # already checked on the generic format code
35        cond = "true"
36    else:
37        cond = "trace_event_get_state(%s)" % ("TRACE_" + event.name.upper())
38
39    out('    if (%(cond)s) {',
40        '#line %(event_lineno)d "%(event_filename)s"',
41        '        syslog(LOG_INFO, "%(name)s " %(fmt)s %(argnames)s);',
42        '#line %(out_next_lineno)d "%(out_filename)s"',
43        '    }',
44        cond=cond,
45        event_lineno=event.lineno,
46        event_filename=os.path.relpath(event.filename),
47        name=event.name,
48        fmt=event.fmt.rstrip("\n"),
49        argnames=argnames)
50
51
52def generate_h_backend_dstate(event, group):
53    out('    trace_event_get_state_dynamic_by_id(%(event_id)s) || \\',
54        event_id="TRACE_" + event.name.upper())
55