babeltrace2-query-babeltrace.trace-infos(7) — Linux manual page

BABELTRACE2-QUERY-(7)      Babeltrace 2 manual     BABELTRACE2-QUERY-(7)

NAME

       babeltrace2-query-babeltrace.trace-infos - Babeltrace 2's trace
       infos query object

DESCRIPTION

       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.

PARAMETERS

       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.

RESULT OBJECT

       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
               stream class’s default clock class’s origin).

           end=NS [signed integer]
               End time of this stream (nanoseconds since the stream
               class’s default clock class’s origin).

       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.

EXAMPLES

   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

BUGS

       If you encounter any issue or usability problem, please report it
       on the Babeltrace bug tracker (see
       <https://bugs.lttng.org/projects/babeltrace>).

RESOURCES

       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>)

AUTHORS

       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>.

COPYRIGHT

       This query object is part of the Babeltrace 2 project.

       Babeltrace is distributed under the MIT license (see
       <https://opensource.org/licenses/MIT>).

SEE ALSO

       babeltrace2-intro(7), babeltrace2-query(1),
       babeltrace2-convert(1)

COLOPHON

       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 2024-06-14.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2024-05-31.)  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 2.1.0-rc1        14 September 2019      BABELTRACE2-QUERY-(7)

Pages that refer to this page: babeltrace2-convert(1), babeltrace2-source.ctf.fs(7)

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