BABELTRACE2−QUERY− - Online Linux Manual PageSection : 7
Updated : 14 September 2019
Source : Babeltrace 2.0.3
Note : Babeltrace 2 manual
NAMEbabeltrace2-query-babeltrace.trace-infos − Babeltrace 2's trace infos query object
DESCRIPTIONThe 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.
PARAMETERSThe 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 OBJECTThe result object is an array of trace info maps (see ‟Trace info map”).
Trace info mapA 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 mapA 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 objectExample 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
BUGSIf you encounter any issue or usability problem, please report it on the Babeltrace bug tracker (see <https://bugs.lttng.org/projects/babeltrace>).
RESOURCESThe 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>)
AUTHORSThe 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>.
COPYRIGHTThis query object is part of the Babeltrace 2 project. Babeltrace is distributed under the MIT license (see <https://opensource.org/licenses/MIT>).
SEE ALSObabeltrace2-intro(7), babeltrace2-query(1), babeltrace2-convert(1) 0
Johanes Gumabo
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