1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4  * License, v. 2.0. If a copy of the MPL was not distributed with this
5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 
7 #ifndef mozilla_RefCountType_h
8 #define mozilla_RefCountType_h
9 
10 #include <stdint.h>
11 
12 /**
13  * MozRefCountType is Mozilla's reference count type.
14  *
15  * We use the same type to represent the refcount of RefCounted objects
16  * as well, in order to be able to use the leak detection facilities
17  * that are implemented by XPCOM.
18  *
19  * Note that this type is not in the mozilla namespace so that it is
20  * usable for both C and C++ code.
21  */
22 typedef uintptr_t MozRefCountType;
23 
24 /*
25  * This is the return type for AddRef() and Release() in nsISupports.
26  * IUnknown of COM returns an unsigned long from equivalent functions.
27  *
28  * The following ifdef exists to maintain binary compatibility with
29  * IUnknown, the base interface in Microsoft COM.
30  */
31 #ifdef XP_WIN
32 typedef unsigned long MozExternalRefCountType;
33 #else
34 typedef uint32_t MozExternalRefCountType;
35 #endif
36 
37 #endif
38