The retrieve buffer can overflow when the publisher loans many samples and send them one by one without any more loans. The problem is, that the samples in the retrieve buffer are only recollected whenever a new loan is acquired. When we never have to call loan again since we have a big buffer of loaned samples on the publisher side, the retrieve buffer will overflow and the communication fails.
The solution is rather simple: Call retrieve_returned_samples before sending any new samples. In this way, we ensure that we reclaim all borrowed samples before we borrow (send) new samples to the receiver.
Pre-Review Checklist for the PR Author
[x] Add sensible notes for the reviewer
[x] PR title is short, expressive and meaningful
[x] Relevant issues are linked
[x] Every source code file has a copyright header with SPDX-License-Identifier: Apache-2.0 OR MIT
[x] Branch follows the naming format (iox2-123-introduce-posix-ipc-example)
[x] Commits messages are according to this guideline
[x] Commit messages have the issue ID ([#123] Add posix ipc example)
Notes for Reviewer
The retrieve buffer can overflow when the publisher loans many samples and send them one by one without any more loans. The problem is, that the samples in the retrieve buffer are only recollected whenever a new loan is acquired. When we never have to call loan again since we have a big buffer of loaned samples on the publisher side, the retrieve buffer will overflow and the communication fails.
The solution is rather simple: Call
retrieve_returned_samples
before sending any new samples. In this way, we ensure that we reclaim all borrowed samples before we borrow (send) new samples to the receiver.Pre-Review Checklist for the PR Author
SPDX-License-Identifier: Apache-2.0 OR MIT
iox2-123-introduce-posix-ipc-example
)[#123] Add posix ipc example
)task-list-completed
)Checklist for the PR Reviewer
Post-review Checklist for the PR Author
References
Use either 'Closes #123' or 'Relates to #123' to reference the corresponding issue.
Relates to #116