[PATCH] D55359: [clangd] Avoid emitting Queued status when we are able to acquire the Barrier.

[Ilya Biryukov via Phabricator via cfe-commits]

ilya-biryukov added inline comments.


================
Comment at: clangd/TUScheduler.cpp:644
+      std::unique_lock<Semaphore> Lock(Barrier, std::try_to_lock);
+      if (Lock.owns_lock()) {
+        ExecuteAction();
----------------
Maybe simplify the code a bit?
```
// Replacing these two lines:
//  emitTUStatus({TUAction::Queued, Req.Name});
//  std::lock_guard<Semaphore> BarrierLock(Barrier);

// With:
std::unique_lock<Semaphore> BarrierLock(Barrier, std::try_to_lock);
if (!Lock.owns_lock()) {
  emitTUStatus({TUAction::Queued, Req.Name});
  Lock.lock();
}
// Rest of the code is the same...
```

Avoids creating two locks and does not require helper lamdbas.


Repository:
  rCTE Clang Tools Extra

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D55359/new/

https://reviews.llvm.org/D55359