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)

Babeltrace 2.0.4                                14 September 2019                          BABELTRACE2-QUERY-(7)