[PATCH] D55770: [clangd] BackgroundIndex rebuilds symbol index periodically.

[Eric Liu via Phabricator via cfe-commits]

ioeric marked an inline comment as done.
ioeric added inline comments.


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Comment at: clangd/index/Background.h:112
+  const size_t BuildIndexPeriodMs;
+  std::atomic<bool> SymbolsUpdatedSinceLastIndex;
+  std::mutex IndexMu;
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kadircet wrote:
> We already have a mutex and cv, maybe get rid of this one signal the CV whenever we have an update and sleep for `buildindexperiodms` before issuing the re-build?
`IndexCV` serves two purposes: 1) get notified when `ShouldStop` is set and 2) timeout after `BuildIndexPeriodMs`. We wouldn't want to `sleep` here because it can take too long to shutdown clangd if `BuildIndexPeriodMs` is big.


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