Merge bitcoin/bitcoin#21895: refactor: Add TSA annotations to the WorkQueue class members

34b04eec44 refactor: Add TSA annotations to the WorkQueue class members (Hennadii Stepanov)

Pull request description:

  Noted while reviewing #19033, and hoping this will not conflict with it :)

ACKs for top commit:
  promag:
    Code review ACK 34b04eec44.

Tree-SHA512: 4c15729acd95223263c19bc0dd64b9e7960872b48edee6eee97a5d0c2b99b8838185ac3a2ccd5bee992cb3a12498633427fe9919be5a12da9949fcf69a6275a0

src/httpserver.cpp

@@ -63,12 +63,11 @@ template <typename WorkItem>
 class WorkQueue
 {
 private:
-    /** Mutex protects entire object */
     Mutex cs;
-    std::condition_variable cond;
-    std::deque<std::unique_ptr<WorkItem>> queue;
-    bool running;
-    size_t maxDepth;
+    std::condition_variable cond GUARDED_BY(cs);
+    std::deque<std::unique_ptr<WorkItem>> queue GUARDED_BY(cs);
+    bool running GUARDED_BY(cs);
+    const size_t maxDepth;
 
 public:
     explicit WorkQueue(size_t _maxDepth) : running(true),