From 8a131190070152ffb0a27ab5dd14d98052467aa9 Mon Sep 17 00:00:00 2001
From: Sam McCall <sam.mccall@gmail.com>
Date: Tue, 20 Sep 2022 22:17:02 +0200
Subject: [PATCH] [clangd] Remove second tracer (which breaks threading
 contract)

---
 clang-tools-extra/clangd/TUScheduler.cpp | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/clang-tools-extra/clangd/TUScheduler.cpp b/clang-tools-extra/clangd/TUScheduler.cpp
index 1e64fac..b85b8e5 100644
--- a/clang-tools-extra/clangd/TUScheduler.cpp
+++ b/clang-tools-extra/clangd/TUScheduler.cpp
@@ -395,11 +395,9 @@ public:
     // If there is no throttler, this dummy request is always satisfied.
     if (!Throttler)
       return;
-    Tracer.emplace("PreambleThrottled");
     ID = Throttler->acquire(Filename, [&] {
       Satisfied.store(true, std::memory_order_release);
       CV.notify_all();
-      Tracer.reset();
     });
   }
 
@@ -414,7 +412,6 @@ public:
   }
 
 private:
-  llvm::Optional<trace::Span> Tracer;
   PreambleThrottler::RequestID ID;
   PreambleThrottler *Throttler;
   std::atomic<bool> Satisfied = {false};
-- 
2.7.4