1 files changed, 81 insertions, 0 deletions
diff --git a/lldb/tools/debugserver/source/MacOSX/CFUtils.h b/lldb/tools/debugserver/source/MacOSX/CFUtils.h
new file mode 100644
index 00000000000..afa984fa11c
--- /dev/null
+++ b/lldb/tools/debugserver/source/MacOSX/CFUtils.h
@@ -0,0 +1,81 @@
+//===-- CFUtils.h -----------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  Created by Greg Clayton on 3/5/07.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __CFUtils_h__
+#define __CFUtils_h__
+
+#include <CoreFoundation/CoreFoundation.h>
+
+#ifdef __cplusplus
+
+//----------------------------------------------------------------------
+// Templatized CF helper class that can own any CF pointer and will
+// call CFRelease() on any valid pointer it owns unless that pointer is
+// explicitly released using the release() member function.
+//----------------------------------------------------------------------
+template <class T>
+class CFReleaser
+{
+public:
+            // Type names for the avlue
+            typedef T element_type;
+
+            // Constructors and destructors
+            CFReleaser(T ptr = NULL) : _ptr(ptr) { }
+            CFReleaser(const CFReleaser& copy) : _ptr(copy.get())
+            {
+                if (get())
+                    ::CFRetain(get());
+            }
+            virtual ~CFReleaser() { reset(); }
+
+            // Assignments
+            CFReleaser& operator= (const CFReleaser<T>& copy)
+            {
+                if (copy != *this)
+                {
+                    // Replace our owned pointer with the new one
+                    reset(copy.get());
+                    // Retain the current pointer that we own
+                    if (get())
+                        ::CFRetain(get());
+                }
+            }
+            // Get the address of the contained type
+            T *     ptr_address()   { return &_ptr; }
+
+            // Access the pointer itself
+    const   T       get() const     { return _ptr;  }
+            T       get()           { return _ptr;  }
+
+            // Set a new value for the pointer and CFRelease our old
+            // value if we had a valid one.
+            void    reset(T ptr = NULL)
+                    {
+                        if (ptr != _ptr)
+                        {
+                            if (_ptr != NULL)
+                                ::CFRelease(_ptr);
+                            _ptr = ptr;
+                        }
+                    }
+
+            // Release ownership without calling CFRelease
+            T    release() { T tmp = _ptr; _ptr = NULL; return tmp; }
+private:
+    element_type _ptr;
+};
+
+#endif    // #ifdef __cplusplus
+#endif    // #ifndef __CFUtils_h__
+