SERVER-20689 improve diagnostics in the case that we leak an exception from an IO worker thread

1 files changed, 8 insertions, 2 deletions

diff --git a/src/mongo/executor/network_interface_asio.cpp b/src/mongo/executor/network_interface_asio.cpp
index c8e8c129008..3de99bfaf1c 100644
--- a/src/mongo/executor/network_interface_asio.cpp
+++ b/src/mongo/executor/network_interface_asio.cpp
@@ -95,8 +95,14 @@ std::string NetworkInterfaceASIO::getHostName() {
 
 void NetworkInterfaceASIO::startup() {
     _serviceRunner = stdx::thread([this]() {
-        asio::io_service::work work(_io_service);
-        _io_service.run();
+        try {
+            asio::io_service::work work(_io_service);
+            _io_service.run();
+        } catch (...) {
+            severe() << "Uncaught exception in NetworkInterfaceASIO IO worker thread of type: "
+                     << exceptionToStatus();
+            fassertFailed(28820);
+        }
     });
     _state.store(State::kRunning);
 }