1 files changed, 7 insertions, 1 deletions
diff --git a/src/mongo/transport/transport_layer_asio.h b/src/mongo/transport/transport_layer_asio.h
index e10d050319c..a3ded3b164a 100644
--- a/src/mongo/transport/transport_layer_asio.h
+++ b/src/mongo/transport/transport_layer_asio.h
@@ -130,7 +130,12 @@ public:
      */
     class TimerService {
     public:
-        TimerService();
+        using Spawn = std::function<stdx::thread(std::function<void()>)>;
+        struct Options {
+            Spawn spawn;
+        };
+        explicit TimerService(Options opt);
+        TimerService() : TimerService(Options{}) {}
         ~TimerService();
 
         /**
@@ -165,6 +170,7 @@ public:
         enum class State { kInitialized, kStarted, kStopped };
         AtomicWord<State> _state;
 
+        Spawn _spawn = [](std::function<void()> f) { return stdx::thread{std::move(f)}; };
         stdx::thread _thread;
     };