From c723f657094bedc5975ca298356ad280e161c491 Mon Sep 17 00:00:00 2001
From: Jan Korous <jkorous@apple.com>
Date: Mon, 27 Nov 2017 13:42:03 +0000
Subject: [Support] Fix locking of shared variable in threadpool

llvm-svn: 319027
---
 llvm/lib/Support/ThreadPool.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'llvm/lib/Support/ThreadPool.cpp')

diff --git a/llvm/lib/Support/ThreadPool.cpp b/llvm/lib/Support/ThreadPool.cpp
index f1b5bdf40c3..d0212ca1346 100644
--- a/llvm/lib/Support/ThreadPool.cpp
+++ b/llvm/lib/Support/ThreadPool.cpp
@@ -47,8 +47,8 @@ ThreadPool::ThreadPool(unsigned ThreadCount)
           // in order for wait() to properly detect that even if the queue is
           // empty, there is still a task in flight.
           {
-            ++ActiveThreads;
             std::unique_lock<std::mutex> LockGuard(CompletionLock);
+            ++ActiveThreads;
           }
           Task = std::move(Tasks.front());
           Tasks.pop();
-- 
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