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NAME | DESCRIPTION | PARAMETERS | RESULT OBJECT | EXAMPLES | BUGS | RESOURCES | AUTHORS | COPYRIGHT | SEE ALSO | COLOPHON |
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BABELTRACE2-QUERY-(7) Babeltrace 2 manual BABELTRACE2-QUERY-(7)
babeltrace2-query-babeltrace.trace-infos - Babeltrace 2: Trace
infos query object
The babeltrace.trace-infos Babeltrace 2 query object indicates
time range information about specific traces and their streams,
and which output ports of an eventual source component will serve
the messages for a given stream.
The babeltrace2-convert(1) command queries this object from all
the source component classes to support the --stream-intersection
feature.
The parameters for this query operation are exactly the same as
you would pass as the initialization parameters of a component
created from the queried component class.
The result object is an array of trace info maps (see “Trace info
map”).
Trace info map
A trace info map contains:
stream-infos=STREAM-INFOS [array of stream info maps]
Stream info maps (see “Stream info map”) for this trace.
Stream info map
A stream info map contains:
range-ns=RANGE [range map]
The time range of this stream, a map containing:
begin=NS [signed integer]
Beginning time of this stream (nanoseconds since the
origin of the default clock class of the stream class).
end=NS [signed integer]
End time of this stream (nanoseconds since the origin of
the default clock class of the stream class).
port-name=PORT-NAME [string]
For an eventual source component initialized with the same
parameters: name of the output port which serves the messages
of this stream.
Result object
Example 1. Two trace infos: one with three stream infos, one with
two stream infos.
- stream-infos:
- range-ns:
begin: 1509556764975082000
end: 1509557102181554400
port-name: trace0-cpu0
- range-ns:
begin: 1509556764947050800
end: 1509557102182771000
port-name: trace0-cpu1
- range-ns:
begin: 1509556764956409300
end: 1509557102182770400
port-name: trace0-cpu2
- stream-infos:
- range-ns:
begin: 1509556764918082000
end: 1509557103849928400
port-name: trace1-cpu0
- range-ns:
begin: 1509556761888820000
end: 1509557109928100400
port-name: trace1-cpu1
If you encounter any issue or usability problem, please report it
on the Babeltrace bug tracker (see
<https://bugs.lttng.org/projects/babeltrace>).
The Babeltrace project shares some communication channels with the
LTTng project (see <https://lttng.org/>).
• Babeltrace website (see <https://babeltrace.org/>)
• Mailing list (see <https://lists.lttng.org>) for support and
development: lttng-dev@lists.lttng.org
• IRC channel (see <irc://irc.oftc.net/lttng>): #lttng on
irc.oftc.net
• Bug tracker (see <https://bugs.lttng.org/projects/babeltrace>)
• Git repository (see
<https://git.efficios.com/?p=babeltrace.git>)
• GitHub project (see <https://github.com/efficios/babeltrace>)
• Continuous integration (see
<https://ci.lttng.org/view/Babeltrace/>)
• Code review (see
<https://review.lttng.org/q/project:babeltrace>)
The Babeltrace 2 project is the result of hard work by many
regular developers and occasional contributors.
The current project maintainer is Jérémie Galarneau
<mailto:jeremie.galarneau@efficios.com>.
This query object is part of the Babeltrace 2 project.
Babeltrace is distributed under the MIT license (see
<https://opensource.org/licenses/MIT>).
babeltrace2-intro(7), babeltrace2-query(1), babeltrace2-convert(1)
This page is part of the babeltrace (trace read and write
libraries and a trace converter) project. Information about the
project can be found at ⟨http://www.efficios.com/babeltrace⟩. If
you have a bug report for this manual page, send it to
lttng-dev@lists.lttng.org. This page was obtained from the
project's upstream Git repository
⟨git://git.efficios.com/babeltrace.git⟩ on 2025-08-11. (At that
time, the date of the most recent commit that was found in the
repository was 2025-06-25.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
Babeltrace 2.2.0rc1 14 September 2019 BABELTRACE2-QUERY-(7)
Pages that refer to this page: babeltrace2-convert(1), babeltrace2-source.ctf.fs(7)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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