chenBright opened a new pull request, #3647:
URL: https://github.com/apache/brpc/pull/3647
### What problem does this PR solve?
Issue Number: resolve
Problem Summary:
Asynchronous rpcz span persistence can race with process teardown, accessing
an already-destroyed
database path string or a released SpanDB.
### What is changed and the side effects?
Changed:
- Add an exit guard that stops span persistence before the global path
string is destroyed.
- Reject new dumps, wait for active persistence and its local DB cleanup to
finish, then release
the global DB reference.
- Acquire local SpanDB ownership before publishing it, and reject
publication after shutdown starts.
Side effects:
- Performance effects:
- Breaking backward compatibility:
---
### Check List:
- Please make sure your changes are compilable.
- When providing us with a new feature, it is best to add related tests.
- Please follow [Contributor Covenant Code of
Conduct](https://github.com/apache/brpc/blob/master/CODE_OF_CONDUCT.md).
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