diff --git a/lib/base/atomic.hpp b/lib/base/atomic.hpp
index 0ebcddefb..c8f169c0b 100644
--- a/lib/base/atomic.hpp
+++ b/lib/base/atomic.hpp
@@ -4,6 +4,9 @@
 #define ATOMIC_H
 
 #include <atomic>
+#include <mutex>
+#include <type_traits>
+#include <utility>
 
 namespace icinga
 {
@@ -38,6 +41,51 @@ public:
 	}
 };
 
+/**
+ * Wraps any T into a std::atomic<T>-like interface that locks using a mutex.
+ *
+ * In contrast to std::atomic<T>, Locked<T> is also valid for types that are not trivially copyable.
+ * In case T is trivially copyable, std::atomic<T> is almost certainly the better choice.
+ *
+ * @ingroup base
+ */
+template<typename T>
+class Locked
+{
+public:
+	inline T load() const
+	{
+		std::unique_lock<std::mutex> lock(m_Mutex);
+
+		return m_Value;
+	}
+
+	inline void store(T desired)
+	{
+		std::unique_lock<std::mutex> lock(m_Mutex);
+
+		m_Value = std::move(desired);
+	}
+
+private:
+	mutable std::mutex m_Mutex;
+	T m_Value;
+};
+
+/**
+ * Type alias for std::atomic<T> if possible, otherwise Locked<T> is used as a fallback.
+ *
+ * @ingroup base
+ */
+template <typename T>
+using AtomicOrLocked =
+#if defined(__GNUC__) && __GNUC__ < 5
+	// GCC does not implement std::is_trivially_copyable until version 5.
+	typename std::conditional<std::is_fundamental<T>::value || std::is_pointer<T>::value, std::atomic<T>, Locked<T>>::type;
+#else /* defined(__GNUC__) && __GNUC__ < 5 */
+	typename std::conditional<std::is_trivially_copyable<T>::value, std::atomic<T>, Locked<T>>::type;
+#endif /* defined(__GNUC__) && __GNUC__ < 5 */
+
 }
 
 #endif /* ATOMIC_H */
diff --git a/lib/base/configobject.ti b/lib/base/configobject.ti
index fcfcb0223..19b7cde83 100644
--- a/lib/base/configobject.ti
+++ b/lib/base/configobject.ti
@@ -59,10 +59,11 @@ abstract class ConfigObject : ConfigObjectBase < ConfigType
 	[config, no_user_modify] String __name (Name);
 	[config, no_user_modify] String "name" (ShortName) {
 		get {{{
-			if (m_ShortName.IsEmpty())
+			String shortName = m_ShortName.load();
+			if (shortName.IsEmpty())
 				return GetName();
 			else
-				return m_ShortName;
+				return shortName;
 		}}}
 	};
 	[config, no_user_modify] name(Zone) zone (ZoneName);
diff --git a/lib/icinga/host.ti b/lib/icinga/host.ti
index 03c606228..de47c1b59 100644
--- a/lib/icinga/host.ti
+++ b/lib/icinga/host.ti
@@ -21,10 +21,11 @@ class Host : Checkable
 
 	[config] String display_name {
 		get {{{
-			if (m_DisplayName.IsEmpty())
+			String displayName = m_DisplayName.load();
+			if (displayName.IsEmpty())
 				return GetName();
 			else
-				return m_DisplayName;
+				return displayName;
 		}}}
 	};
 
diff --git a/lib/icinga/hostgroup.ti b/lib/icinga/hostgroup.ti
index a4404eafe..b679344aa 100644
--- a/lib/icinga/hostgroup.ti
+++ b/lib/icinga/hostgroup.ti
@@ -11,10 +11,11 @@ class HostGroup : CustomVarObject
 {
 	[config] String display_name {
 		get {{{
-			if (m_DisplayName.IsEmpty())
+			String displayName = m_DisplayName.load();
+			if (displayName.IsEmpty())
 				return GetName();
 			else
-				return m_DisplayName;
+				return displayName;
 		}}}
 	};
 
diff --git a/lib/icinga/service.ti b/lib/icinga/service.ti
index bab1ebc8f..45fa98ea2 100644
--- a/lib/icinga/service.ti
+++ b/lib/icinga/service.ti
@@ -33,10 +33,11 @@ class Service : Checkable < ServiceNameComposer
 
 	[config] String display_name {
 		get {{{
-			if (m_DisplayName.IsEmpty())
+			String displayName = m_DisplayName.load();
+			if (displayName.IsEmpty())
 				return GetShortName();
 			else
-				return m_DisplayName;
+				return displayName;
 		}}}
 	};
 	[config, required] name(Host) host_name;
diff --git a/lib/icinga/servicegroup.ti b/lib/icinga/servicegroup.ti
index 69f300508..7daf9d419 100644
--- a/lib/icinga/servicegroup.ti
+++ b/lib/icinga/servicegroup.ti
@@ -11,10 +11,11 @@ class ServiceGroup : CustomVarObject
 {
 	[config] String display_name {
 		get {{{
-			if (m_DisplayName.IsEmpty())
+			String displayName = m_DisplayName.load();
+			if (displayName.IsEmpty())
 				return GetName();
 			else
-				return m_DisplayName;
+				return displayName;
 		}}}
 	};
 
diff --git a/lib/icinga/timeperiod.ti b/lib/icinga/timeperiod.ti
index 27365988e..6729a4a6a 100644
--- a/lib/icinga/timeperiod.ti
+++ b/lib/icinga/timeperiod.ti
@@ -12,10 +12,11 @@ class TimePeriod : CustomVarObject
 {
 	[config] String display_name {
 		get {{{
-			if (m_DisplayName.IsEmpty())
+			String displayName = m_DisplayName.load();
+			if (displayName.IsEmpty())
 				return GetName();
 			else
-				return m_DisplayName;
+				return displayName;
 		}}}
 	};
 	[config] Dictionary::Ptr ranges;
diff --git a/lib/icinga/user.ti b/lib/icinga/user.ti
index 450d95358..f1b3faa6b 100644
--- a/lib/icinga/user.ti
+++ b/lib/icinga/user.ti
@@ -13,10 +13,11 @@ class User : CustomVarObject
 {
 	[config] String display_name {
 		get {{{
-			if (m_DisplayName.IsEmpty())
+			String displayName = m_DisplayName.load();
+			if (displayName.IsEmpty())
 				return GetName();
 			else
-				return m_DisplayName;
+				return displayName;
 		}}}
 	};
 	[config, no_user_modify, required] array(name(UserGroup)) groups {
diff --git a/lib/icinga/usergroup.ti b/lib/icinga/usergroup.ti
index 311932171..e955c5e5e 100644
--- a/lib/icinga/usergroup.ti
+++ b/lib/icinga/usergroup.ti
@@ -11,10 +11,11 @@ class UserGroup : CustomVarObject
 {
 	[config] String display_name {
 		get {{{
-			if (m_DisplayName.IsEmpty())
+			String displayName = m_DisplayName.load();
+			if (displayName.IsEmpty())
 				return GetName();
 			else
-				return m_DisplayName;
+				return displayName;
 		}}}
 	};
 
diff --git a/tools/mkclass/classcompiler.cpp b/tools/mkclass/classcompiler.cpp
index fd30df8e1..acd9e390b 100644
--- a/tools/mkclass/classcompiler.cpp
+++ b/tools/mkclass/classcompiler.cpp
@@ -797,7 +797,7 @@ void ClassCompiler::HandleClass(const Klass& klass, const ClassDebugInfo&)
 					<< "{" << std::endl;
 
 				if (field.GetAccessor.empty() && !(field.Attributes & FANoStorage))
-					m_Impl << "\t" << "return m_" << field.GetFriendlyName() << ";" << std::endl;
+					m_Impl << "\t" << "return m_" << field.GetFriendlyName() << ".load();" << std::endl;
 				else
 					m_Impl << field.GetAccessor << std::endl;
 
@@ -835,7 +835,7 @@ void ClassCompiler::HandleClass(const Klass& klass, const ClassDebugInfo&)
 
 					
 				if (field.SetAccessor.empty() && !(field.Attributes & FANoStorage))
-					m_Impl << "\t" << "m_" << field.GetFriendlyName() << " = value;" << std::endl;
+					m_Impl << "\t" << "m_" << field.GetFriendlyName() << ".store(value);" << std::endl;
 				else
 					m_Impl << field.SetAccessor << std::endl << std::endl;
 
@@ -1044,7 +1044,7 @@ void ClassCompiler::HandleClass(const Klass& klass, const ClassDebugInfo&)
 			if (field.Attributes & FANoStorage)
 				continue;
 
-			m_Header << "\t" << field.Type.GetRealType() << " m_" << field.GetFriendlyName() << ";" << std::endl;
+			m_Header << "\tAtomicOrLocked<" << field.Type.GetRealType() << "> m_" << field.GetFriendlyName() << ";" << std::endl;
 		}
 		
 		/* signal */
@@ -1431,6 +1431,7 @@ void ClassCompiler::CompileStream(const std::string& path, std::istream& input,
 		<< "#include \"base/type.hpp\"" << std::endl
 		<< "#include \"base/value.hpp\"" << std::endl
 		<< "#include \"base/array.hpp\"" << std::endl
+		<< "#include \"base/atomic.hpp\"" << std::endl
 		<< "#include \"base/dictionary.hpp\"" << std::endl
 		<< "#include <boost/signals2.hpp>" << std::endl << std::endl;