[21293] Fix destruction data-race on participant removal in intra-process (backport #5034) #5365
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) * Refs #21293: Add BB test Signed-off-by: Mario Dominguez <[email protected]> * Refs #21293: Reinforce test to fail more frequently Signed-off-by: Mario Dominguez <[email protected]> * Refs #21293: Add RefCountedPointer.hpp to utils Signed-off-by: Mario Dominguez <[email protected]> * Refs #21293: Add unittests for RefCountedPointer Signed-off-by: Mario Dominguez <[email protected]> * Refs #21293: LocalReaderPointer.hpp Signed-off-by: Mario Dominguez <[email protected]> * Refs #21293: BaseReader aggregates LocalReaderPointer Signed-off-by: Mario Dominguez <[email protected]> * Refs #21293: ReaderLocator aggregates LocalReaderPointer Signed-off-by: Mario Dominguez <[email protected]> * Refs #21293: RTPSDomainImpl::find_local_reader returns a sared_ptr<LocalReaderPointer> and properly calls local_actions_on_reader_removed() Signed-off-by: Mario Dominguez <[email protected]> * Refs #21293: RTPSWriters properly using LocalReaderPointer::Instance when accessing local reader Signed-off-by: Mario Dominguez <[email protected]> * Refs #21293: Linter Signed-off-by: Mario Dominguez <[email protected]> * Refs #21293: Fix windows warnings Signed-off-by: Mario Dominguez <[email protected]> * Refs #21293: Address Miguel's review Signed-off-by: Mario Dominguez <[email protected]> * Refs #21293: Apply last comment Signed-off-by: Mario Dominguez <[email protected]> * Refs #21293: NIT Signed-off-by: Mario Dominguez <[email protected]> --------- Signed-off-by: Mario Dominguez <[email protected]> (cherry picked from commit 456e45f)
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Description
This PR addresses a race issue happening in stressed intraprocess scenarios when
EDP'swriter intends to use the remote local reader pointer of an already removed participant. This happens because the participant hasn't received the other's one disposal yet (as it goes through transport).Some ci flaky tests have already been identified to be related with this issue.
The proposed solution introduces a new state in the Readers
LocalReaderViewStatusin which the reader will notify that it is inactive as soon as it is destroyed and noone is using it.On the other side, the remote local writers using pointers to it, now holds a
LocalReaderPointerwhich wraps the raw reader's pointer plus the view. An internal counter now accounts for the number of references.Thanks @MiguelCompany for helping with the final's solution design.
Note: the test may be launched with
--restest-until-fail 20or so, in order to reproduce the issue. For a more frequent failure, review can launch thecolcon testwith thetaskset -c 0,1prefix to make the test to stress more and make it fail more frequently.@Mergifyio backport 3.1.x 3.0.x 2.14.x 2.10.x
Contributor Checklist
Commit messages follow the project guidelines.
The code follows the style guidelines of this project.
Tests that thoroughly check the new feature have been added/Regression tests checking the bug and its fix have been added; the added tests pass locally
Any new/modified methods have been properly documented using Doxygen.
N/A Any new configuration API has an equivalent XML API (with the corresponding XSD extension)
Changes are backport compatible: they do NOT break ABI nor change library core behavior.
Changes are API compatible.
N/A New feature has been added to the
versions.mdfile (if applicable).N/A New feature has been documented/Current behavior is correctly described in the documentation.
Applicable backports have been included in the description.
Reviewer Checklist
This is an automatic backport of pull request #5034 done by [Mergify](https://mergify.com).