diff options
author | Paul Durrant <paul.durrant@citrix.com> | 2016-08-04 14:44:14 +0100 |
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committer | Stefan Hajnoczi <stefanha@redhat.com> | 2016-09-05 13:47:01 -0400 |
commit | 0a852417564bc59441dc09509beacf7b49bc1e57 (patch) | |
tree | a27b04adbdaa3681d8797dab9097df2aca9464fd /scripts/tracetool | |
parent | e87d397e5ef66276ccc49b829527d605ca07d0ad (diff) |
trace: add syslog tracing backend
This patch adds a tracing backend which sends output using syslog().
The syslog backend is limited to POSIX compliant systems.
openlog() is called with facility set to LOG_DAEMON, with the LOG_PID
option. Trace events are logged at level LOG_INFO.
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Message-id: 1470318254-29989-1-git-send-email-paul.durrant@citrix.com
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'scripts/tracetool')
-rw-r--r-- | scripts/tracetool/backend/syslog.py | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/scripts/tracetool/backend/syslog.py b/scripts/tracetool/backend/syslog.py new file mode 100644 index 0000000000..89019bc759 --- /dev/null +++ b/scripts/tracetool/backend/syslog.py @@ -0,0 +1,45 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- + +""" +Syslog built-in backend. +""" + +__author__ = "Paul Durrant <paul.durrant@citrix.com>" +__copyright__ = "Copyright 2016, Citrix Systems Inc." +__license__ = "GPL version 2 or (at your option) any later version" + +__maintainer__ = "Stefan Hajnoczi" +__email__ = "stefanha@redhat.com" + + +from tracetool import out + + +PUBLIC = True + + +def generate_h_begin(events): + out('#include <syslog.h>', + '#include "trace/control.h"', + '') + + +def generate_h(event): + argnames = ", ".join(event.args.names()) + if len(event.args) > 0: + argnames = ", " + argnames + + if "vcpu" in event.properties: + # already checked on the generic format code + cond = "true" + else: + cond = "trace_event_get_state(%s)" % ("TRACE_" + event.name.upper()) + + out(' if (%(cond)s) {', + ' syslog(LOG_INFO, "%(name)s " %(fmt)s %(argnames)s);', + ' }', + cond=cond, + name=event.name, + fmt=event.fmt.rstrip("\n"), + argnames=argnames) |