The Tor Browser: xpcom/glue/nsWeakReference.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-

     2  *

     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/. */

     7 #ifndef nsWeakReference_h__

     8 #define nsWeakReference_h__

    10 // nsWeakReference.h

    12 // See mfbt/WeakPtr.h for a more typesafe C++ implementation of weak references

    14 #include "nsIWeakReferenceUtils.h"

    16 class nsWeakReference;

    18 // Set IMETHOD_VISIBILITY to empty so that the class-level NS_COM declaration

    19 // controls member method visibility.

    20 #undef  IMETHOD_VISIBILITY

    21 #define IMETHOD_VISIBILITY NS_COM_GLUE

    23 class NS_COM_GLUE nsSupportsWeakReference : public nsISupportsWeakReference

    24   {

    25     public:

    26       nsSupportsWeakReference()

    27           : mProxy(0)

    28         {

    29           // nothing else to do here

    30         }

    32       NS_DECL_NSISUPPORTSWEAKREFERENCE

    34     protected:

    35       inline ~nsSupportsWeakReference();

    37     private:

    38       friend class nsWeakReference;

    40       void

    41       NoticeProxyDestruction()

    42           // ...called (only) by an |nsWeakReference| from _its_ dtor.

    43         {

    44           mProxy = 0;

    45         }

    47       nsWeakReference* mProxy;

    49 		protected:

    51 			void ClearWeakReferences();

    52 			bool HasWeakReferences() const {return mProxy != 0;}

    53   };

    55 #undef  IMETHOD_VISIBILITY

    56 #define IMETHOD_VISIBILITY NS_VISIBILITY_HIDDEN

    58 inline

    59 nsSupportsWeakReference::~nsSupportsWeakReference()

    60   {

    61   	ClearWeakReferences();

    62   }

    64 #endif

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