0a85241756
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>
46 lines
1.0 KiB
Python
46 lines
1.0 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Syslog built-in backend.
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"""
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__author__ = "Paul Durrant <paul.durrant@citrix.com>"
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__copyright__ = "Copyright 2016, Citrix Systems Inc."
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__license__ = "GPL version 2 or (at your option) any later version"
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__maintainer__ = "Stefan Hajnoczi"
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__email__ = "stefanha@redhat.com"
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from tracetool import out
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PUBLIC = True
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def generate_h_begin(events):
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out('#include <syslog.h>',
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'#include "trace/control.h"',
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'')
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def generate_h(event):
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argnames = ", ".join(event.args.names())
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if len(event.args) > 0:
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argnames = ", " + argnames
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if "vcpu" in event.properties:
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# already checked on the generic format code
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cond = "true"
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else:
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cond = "trace_event_get_state(%s)" % ("TRACE_" + event.name.upper())
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out(' if (%(cond)s) {',
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' syslog(LOG_INFO, "%(name)s " %(fmt)s %(argnames)s);',
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' }',
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cond=cond,
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name=event.name,
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fmt=event.fmt.rstrip("\n"),
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argnames=argnames)
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