From f6c1f5dc0fd4177340eb989f2289dc3278a8d1fa Mon Sep 17 00:00:00 2001
From: Alexey Rybalchenko <alexryba@gmail.com>
Date: Thu, 13 Sep 2018 16:31:08 +0200
Subject: [PATCH] Fix theoretical race in signal handler

---
 fairmq/plugins/Control.cxx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fairmq/plugins/Control.cxx b/fairmq/plugins/Control.cxx
index ce5b83976..d4fc99884 100644
--- a/fairmq/plugins/Control.cxx
+++ b/fairmq/plugins/Control.cxx
@@ -12,12 +12,13 @@
 #include <poll.h> // for the interactive mode
 #include <csignal> // catching system signals
 #include <functional>
+#include <atomic>
 
 using namespace std;
 
 namespace
 {
-    volatile sig_atomic_t gSignalStatus = 0;
+    std::atomic<sig_atomic_t> gSignalStatus(0);
 
     extern "C" auto signal_handler(int signal) -> void
     {