From 1727a98f603dcb55a114667c30d8e93db66cd47a Mon Sep 17 00:00:00 2001
From: Sebastian Eibl <sebastian.eibl@fau.de>
Date: Mon, 15 Apr 2019 11:07:19 +0200
Subject: [PATCH] improved performance of Singleton
---
src/core/singleton/Singleton.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/core/singleton/Singleton.h b/src/core/singleton/Singleton.h
index 36a7ea5f8..ead687d0c 100644
--- a/src/core/singleton/Singleton.h
+++ b/src/core/singleton/Singleton.h
@@ -86,7 +86,8 @@ public:
//@{
static const shared_ptr<T>& instance()
{
- std::lock_guard<std::mutex> lock( instanceMutex_ );
+ // this implementation is thread safe
+ // https://stackoverflow.com/questions/1661529/is-meyers-implementation-of-the-singleton-pattern-thread-safe
static shared_ptr<T> object( new T() );
isInstantiated_ = true;
return object;
--
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