gecko-dev/xpcom/base/nsWeakReference.h
Benjamin Smedberg d478e7c99f Bug 1332631 part B - file moves from xpcom/glue to xpcom/base, r=froydnj
MozReview-Commit-ID: ARS1aTugYjl

--HG--
rename : xpcom/glue/AutoRestore.h => xpcom/base/AutoRestore.h
rename : xpcom/glue/EnumeratedArrayCycleCollection.h => xpcom/base/EnumeratedArrayCycleCollection.h
rename : xpcom/glue/IntentionalCrash.h => xpcom/base/IntentionalCrash.h
rename : xpcom/glue/nsCOMPtr.cpp => xpcom/base/nsCOMPtr.cpp
rename : xpcom/glue/nsCOMPtr.h => xpcom/base/nsCOMPtr.h
rename : xpcom/glue/nsCRTGlue.cpp => xpcom/base/nsCRTGlue.cpp
rename : xpcom/glue/nsCRTGlue.h => xpcom/base/nsCRTGlue.h
rename : xpcom/glue/nsClassInfoImpl.cpp => xpcom/base/nsClassInfoImpl.cpp
rename : xpcom/glue/nsCycleCollectionNoteChild.h => xpcom/base/nsCycleCollectionNoteChild.h
rename : xpcom/glue/nsCycleCollectionNoteRootCallback.h => xpcom/base/nsCycleCollectionNoteRootCallback.h
rename : xpcom/glue/nsCycleCollectionParticipant.cpp => xpcom/base/nsCycleCollectionParticipant.cpp
rename : xpcom/glue/nsCycleCollectionParticipant.h => xpcom/base/nsCycleCollectionParticipant.h
rename : xpcom/glue/nsCycleCollectionTraversalCallback.h => xpcom/base/nsCycleCollectionTraversalCallback.h
rename : xpcom/glue/nsDebug.h => xpcom/base/nsDebug.h
rename : xpcom/glue/nsIClassInfoImpl.h => xpcom/base/nsIClassInfoImpl.h
rename : xpcom/glue/nsID.cpp => xpcom/base/nsID.cpp
rename : xpcom/glue/nsID.h => xpcom/base/nsID.h
rename : xpcom/glue/nsIInterfaceRequestorUtils.cpp => xpcom/base/nsIInterfaceRequestorUtils.cpp
rename : xpcom/glue/nsIInterfaceRequestorUtils.h => xpcom/base/nsIInterfaceRequestorUtils.h
rename : xpcom/glue/nsINIParser.cpp => xpcom/base/nsINIParser.cpp
rename : xpcom/glue/nsINIParser.h => xpcom/base/nsINIParser.h
rename : xpcom/glue/nsISupportsImpl.cpp => xpcom/base/nsISupportsImpl.cpp
rename : xpcom/glue/nsISupportsImpl.h => xpcom/base/nsISupportsImpl.h
rename : xpcom/glue/nsISupportsUtils.h => xpcom/base/nsISupportsUtils.h
rename : xpcom/glue/nsIWeakReferenceUtils.h => xpcom/base/nsIWeakReferenceUtils.h
rename : xpcom/glue/nsMemory.cpp => xpcom/base/nsMemory.cpp
rename : xpcom/glue/nsMemory.h => xpcom/base/nsMemory.h
rename : xpcom/glue/nsTWeakRef.h => xpcom/base/nsTWeakRef.h
rename : xpcom/glue/nsVersionComparator.cpp => xpcom/base/nsVersionComparator.cpp
rename : xpcom/glue/nsVersionComparator.h => xpcom/base/nsVersionComparator.h
rename : xpcom/glue/nsWeakReference.cpp => xpcom/base/nsWeakReference.cpp
rename : xpcom/glue/nsWeakReference.h => xpcom/base/nsWeakReference.h
extra : rebase_source : df11b181f383b70ffe5051716d63ed11b98be53b
extra : histedit_source : 6d0743fac0562e4676e44a52f0e85375fb4a44ff
2017-01-23 09:24:01 -05:00

50 lines
1.2 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.
// The thread safety check is made by the caller.
void NoticeProxyDestruction() { mProxy = nullptr; }
nsWeakReference* MOZ_NON_OWNING_REF mProxy;
protected:
void ClearWeakReferences();
bool HasWeakReferences() const { return !!mProxy; }
};
inline
nsSupportsWeakReference::~nsSupportsWeakReference()
{
ClearWeakReferences();
}
#endif