From 72175e5757a7d586b0fae65deddd660439cd4f54 Mon Sep 17 00:00:00 2001
From: Alexey Rybalchenko <alexryba@gmail.com>
Date: Wed, 31 Mar 2021 10:57:29 +0200
Subject: [PATCH] shmmonitor: optimize startup to avoid repeated start

---
 fairmq/shmem/Manager.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fairmq/shmem/Manager.h b/fairmq/shmem/Manager.h
index 24728d52..a1dd4322 100644
--- a/fairmq/shmem/Manager.h
+++ b/fairmq/shmem/Manager.h
@@ -101,6 +101,7 @@ class Manager
         }
 
         if (autolaunchMonitor) {
+            boost::interprocess::scoped_lock<boost::interprocess::named_mutex> lock(fShmMtx);
             StartMonitor(fShmId);
         }