Hi everyone!
Two weeks after having released [1] Babeltrace 2's first release
candidate, today we're releasing Babeltrace 2.0.0-rc2.
A prettified version of this announcement is available at:
https://diamon.org/babeltrace/docs/release-notes/babeltrace-2.0.0-rc2-release-notes.html
What's new since Babeltrace 2.0.0-rc1?
======================================
Improvements
------------
General:
* Introduce `BT_ASSERT_DBG()` for assertions that must only be
evaluated in debugging mode (when the `BABELTRACE_DEBUG_MODE`
environment variable is set to `1` at configuration time).
`BT_ASSERT()` assertions are now always evaluated, regardless of
the debugging/production mode.
This change's purpose is to keep as many slow-path assertions as
possible to detect more Babeltrace 2 programming errors, even in
production.
See `98b15851`.
* Remove ABI versioning in Babeltrace 2 shared object plugins as we
don't need this property.
See `7c0244d6`.
* In libbabeltrace2's API:
* Rename `BT_RANGE_SET_` prefixes to `BT_INTEGER_RANGE_SET_`.
See `eb171ee9`.
* Make `bt_version_get_major()`, `bt_version_get_minor()`, and
`bt_version_get_patch()` functions return `unsigned int` instead
of `int`.
See `78deb913`.
* Remove the `BT_GRAPH_RUN_STATUS_END` status code:
`bt_graph_run()` now returns `BT_GRAPH_RUN_STATUS_OK` when all
the graph's sink components are ended.
See `9669d693`.
`ctf` plugin:
Append error causes at more source locations.
This means more precise error messages reported by the `babeltrace2`
[2] CLI tool, for example.
See `b7d2695a, `b30284d1, `2246e99da, and `1419db2bc.
`source.ctf.fs` component class:
Return an error when failing to load or create an index for a
trace.
See `29a8227a`.
`filter.lttng-utils.debug-info` component class:
Create stream classes and event classes which correspond to stream
classes and event classes in incoming trace classes as soon as we
encounter a new trace class, rather than as needed.
See `db5d746d`.
Python bindings:
In `bt2.Graph.add_component()`, validate that the `params` parameter
is implicitly convertible to a `bt2.Mapvalue` object (`dict`, for
example).
See `401b7022`.
Bug fixes
---------
General:
Fix many issues reported by static analysis tools (scan-build,
Coverity [3], and compiler warnings).
`source.ctf.fs` component class:
Fix an index handling bug which occured when multiple data stream
files in a CTF trace belong to the same data stream.
See `ce75de14`.
`source.ctf.lttng-live` component class:
Fix a bug in which a disappearing LTTng live tracing session could
lead to an assertion failure.
See `ba90bce7`.
Python bindings:
Fix an assertion failure which occurs when a trace or trace class
destruction listener raises an exception.
See `64961f8b`.
Upcoming
========
We are still hard at work putting the finishing touches on our way to
the final 2.0.0 release.
We invite you to try this release candidate and report any problems you
may encounter to the `lttng-dev@xxxxxxxxxxxxxxx` [4] mailing list or
through the Babeltrace bug tracker [5].
Documentation
-------------
We are currently documenting the entire Babeltrace 2 C API to make the
development of new component classes as easy as possible.
We'll also work on the Python bindings documentation.
The documentation of the API will be made available on the official
Babeltrace website [6].
Other tasks
-----------
* Improve test coverage.
* Improve resilience to corrupted/malformed CTF traces.
* Minor internal cleanups and bug fixes.
Important links
===============
Babeltrace 2.0.0-rc2 tarball:
https://www.efficios.com/files/babeltrace/babeltrace-2.0.0-rc2.tar.bz2
Babeltrace website:
https://diamon.org/babeltrace
Mailing list (for support and development):
`lttng-dev@xxxxxxxxxxxxxxx`
IRC channel:
`#lttng` on `irc.oftc.net`
Git repository:
https://bugs.lttng.org/projects/babeltrace
GitHub project:
https://github.com/efficios/babeltrace
Continuous integration:
https://ci.lttng.org/view/Babeltrace/
Code review:
https://review.lttng.org/q/project:babeltrace
References
==========
[1]: https://diamon.org/babeltrace/docs/release-notes/babeltrace-2.0.0-rc1-release-notes.html
[2]: https://diamon.org/babeltrace/docs/v2.0/man1/babeltrace2.1/
[3]: https://scan.coverity.com/projects/babeltrace
[4]: https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
[5]: https://bugs.lttng.org/projects/babeltrace
[6]: https://diamon.org/babeltrace/
--
Jérémie Galarneau
EfficiOS Inc.
http://www.efficios.com
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