[rcl_lifecycle] Do not share transition event message between nodes #956
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Signed-off-by: Ivan Santiago Paunovic <ivanpauno@ekumenlabs.com>
… idl C types API Signed-off-by: Ivan Santiago Paunovic <ivanpauno@ekumenlabs.com>
|
CI:
|
fujitatomoya
approved these changes
Dec 18, 2021
|
I cannot reproduce https://ci.ros2.org/job/ci_linux-aarch64/10476/console with local environment. CI(retry):
|
|
I was able to reproduce the issue locally, it's a preexistent issue that got triggered because how I've run CI, so again but with different flags:
|
|
Windows seem to have failed last time because of network issues, again:
|
ros2/rmw_implementation#202 should be fixing that |
delete-merged-branch
bot
deleted the
ivanpauno/lifecycle-node-destruction-issue
branch
mauropasse
pushed a commit
to mauropasse/rcl
that referenced
this pull request
Aug 2, 2022
…os2#956) Signed-off-by: Ivan Santiago Paunovic <ivanpauno@ekumenlabs.com>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This is a simple bug that was never hit before.
The following sequence of events will end up in an error being triggered by the rmw implementation:
The issue is that the third step finalized the static lifetime transition event message shared by all the nodes, and the transition label will still be uninitialized when rcl_lifecycle_com_interface_publish_notification() is called.
(rmw implementations don't accept null c typesupport strings, they need an allocated string "\0")
It was pretty easy to hit the bug when working in ros2/rclpy#865, as it's not obvious when destruction happens when you have a garbage collector.
Note: this change breaks ABI, the backport will need to initialize and fini a new message in rcl_lifecycle_com_interface_publish_notification().
That's a bit not ideal because it triggers an allocation each time, but considering how our C type mapping works there doesn't seem to be a better way to do it.