* Prevent double deletion when setting to an object that is already set.

* Added Unset() and Delete() methods.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@11680 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/shared/AutoDeleter.h

@@ -36,7 +36,7 @@ namespace BPrivate {
 
 // AutoDeleter
 
-template<typename C, typename Delete>
+template<typename C, typename DeleteFunc>
 class AutoDeleter {
 public:
 	inline AutoDeleter()
@@ -56,9 +56,21 @@ public:
 
 	inline void SetTo(C *object)
 	{
+		if (object != fObject) {
 			fDelete(fObject);
 			fObject = object;
 		}
+	}
+
+	inline void Unset()
+	{
+		SetTo(NULL);
+	}
+
+	inline void Delete()
+	{
+		SetTo(NULL);
+	}
 
 	inline C *Detach()
 	{
@@ -69,7 +81,7 @@ public:
 
 private:
 	C			*fObject;
-	Delete	fDelete;
+	DeleteFunc	fDelete;
 };