X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=include%2Fthreadwrapper%2Fsingleton.h;fp=include%2Fthreadwrapper%2Fsingleton.h;h=9e2aab5274a11523d6241dfb2c104d8515fb45b8;hb=dec33c63afafabf83c3039e916725cac6faef9b3;hp=0000000000000000000000000000000000000000;hpb=9b22dd53fe62e312c1647310b7ec43aa127090af;p=fms.git

diff --git a/include/threadwrapper/singleton.h b/include/threadwrapper/singleton.h
new file mode 100644
index 0000000..9e2aab5
--- /dev/null
+++ b/include/threadwrapper/singleton.h
@@ -0,0 +1,61 @@
+#ifndef _singleton_
+#define _singleton_
+
+#include <cassert>
+
+#include "noncopyable.h"
+
+//! SingletonDestroyer
+template <class T>
+class Destroyer
+{
+	T* doomed;
+	public:
+  
+	Destroyer(T* q) : doomed(q) { assert(doomed); }
+	~Destroyer();
+};
+
+template <class T>
+Destroyer<T>::~Destroyer()
+{
+	try
+	{
+		if(doomed)
+		{
+			delete doomed;
+		}
+	}
+	catch(...)
+	{
+    }
+  
+	doomed = 0;
+}
+
+template <class T>
+class Singleton:public NonCopyable
+{
+public:
+
+	static T *Instance();
+
+private:
+	
+};
+
+template <class T>
+T *Singleton<T>::Instance()
+{
+	static T *obj=0;
+	static Poco::FastMutex mutex;
+	Poco::ScopedLock<Poco::FastMutex> g(mutex);
+	if(obj==0)
+	{
+		obj=new T();
+		static Destroyer<T> des(obj);
+	}
+	return const_cast<T*>(obj);
+}
+
+#endif	// _singleton_