gecko/xpcom/glue/nsCycleCollectionParticipant.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2006
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsCycleCollectionParticipant.h"
#include "nsCOMPtr.h"
static void
NoteChild(PRUint32 aLangID, void *aScriptThing, void *aClosure)
{
nsCycleCollectionTraversalCallback *cb =
static_cast<nsCycleCollectionTraversalCallback*>(aClosure);
cb->NoteScriptChild(aLangID, aScriptThing);
}
void
nsScriptObjectTracer::TraverseScriptObjects(void *p,
nsCycleCollectionTraversalCallback &cb)
{
Trace(p, NoteChild, &cb);
}
nsresult
nsXPCOMCycleCollectionParticipant::RootAndUnlinkJSObjects(void *p)
{
nsISupports *s = static_cast<nsISupports*>(p);
NS_ADDREF(s);
return NS_OK;
}
nsresult
nsXPCOMCycleCollectionParticipant::Unlink(void *p)
{
return NS_OK;
}
nsresult
nsXPCOMCycleCollectionParticipant::Unroot(void *p)
{
nsISupports *s = static_cast<nsISupports*>(p);
NS_RELEASE(s);
return NS_OK;
}
nsresult
nsXPCOMCycleCollectionParticipant::Traverse
(void *p, nsCycleCollectionTraversalCallback &cb)
{
return NS_OK;
}
void
nsXPCOMCycleCollectionParticipant::UnmarkPurple(nsISupports *n)
{
}
NS_IMETHODIMP_(void)
nsXPCOMCycleCollectionParticipant::Trace(void *p, TraceCallback cb,
void *closure)
{
}
PRBool
nsXPCOMCycleCollectionParticipant::CheckForRightISupports(nsISupports *s)
{
nsCOMPtr<nsISupports> foo;
s->QueryInterface(NS_GET_IID(nsCycleCollectionISupports),
getter_AddRefs(foo));
return s == foo;
}