gecko/xpcom/glue/nsWeakReference.h
Nicholas Nethercote 0b39dd481e Bug 1058388 - Remove NS_COM_GLUE and IMETHOD_VISIBILITY. r=bsmedberg.
--HG--
extra : rebase_source : 250ec1323d4097101a8e0331a2bf7fab59f72b1d
2014-08-27 15:47:27 -07:00

49 lines
1.1 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsWeakReference_h__
#define nsWeakReference_h__
// nsWeakReference.h
// See mfbt/WeakPtr.h for a more typesafe C++ implementation of weak references
#include "nsIWeakReferenceUtils.h"
class nsWeakReference;
class nsSupportsWeakReference : public nsISupportsWeakReference
{
public:
nsSupportsWeakReference() : mProxy(0) {}
NS_DECL_NSISUPPORTSWEAKREFERENCE
protected:
inline ~nsSupportsWeakReference();
private:
friend class nsWeakReference;
// Called (only) by an |nsWeakReference| from _its_ dtor.
void NoticeProxyDestruction() { mProxy = 0; }
nsWeakReference* mProxy;
protected:
void ClearWeakReferences();
bool HasWeakReferences() const { return mProxy != 0; }
};
inline
nsSupportsWeakReference::~nsSupportsWeakReference()
{
ClearWeakReferences();
}
#endif