babeltrace2-query-babeltrace.trace-infos - Babeltrace 2: Trace infos query object

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>.

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

This query object is part of the Babeltrace 2 project. Babeltrace is distributed under the MIT license (see <https://opensource.org/licenses/MIT>).

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.

ResultobjectExample1.Twotraceinfos:onewiththreestreaminfos,onewithtwostreaminfos. - 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

babeltrace2-query-babeltrace.trace-infos - Babeltrace 2: Trace infos query object

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 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 result object is an array of trace info maps (see “Trace info map”). Traceinfomap A trace info map contains: stream-infos=STREAM-INFOS [array of stream info maps] Stream info maps (see “Stream info map”) for this trace. Streaminfomap 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.

babeltrace2-intro(7), babeltrace2-query(1), babeltrace2-convert(1) Babeltrace 2.1.1 14 September 2019 BABELTRACE2-QUERY-(7)