Reduce locking contention over fd iterations - #1111
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quick note: this change is independent of other changes in the stack, but I'm placing it here since it makes maintaining the stack on my end easier rather than maintaining a mega-merge. fingers crossed the new github stacked PRs support (finally in public preview today!) will soon support merge queues + squash merges well, and we'll be able to use them; would make things a significantly easier to manage in our project |
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🤖 SemverChecks 🤖 No breaking API changes detected Note: this does not mean API is unchanged, or even that there are no breaking changes; simply, none of the detections triggered. |
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By storing a tiny bit of data, we don't need to bother grabbing a lock before we know which subsystem an FD belongs to when iterating, and can selectively only grab locks when pointing at the correct subsystem.