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49d8c9be16
All CC classes are potentially cycle collectable, so we need to implement this function on the participant for all CC classes.
51 lines
1.5 KiB
C++
51 lines
1.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsCycleCollectionParticipant.h"
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#include "nsCOMPtr.h"
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void
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nsScriptObjectTracer::NoteJSChild(void *aScriptThing, const char *name,
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void *aClosure)
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{
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nsCycleCollectionTraversalCallback *cb =
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static_cast<nsCycleCollectionTraversalCallback*>(aClosure);
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NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb, name);
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cb->NoteJSChild(aScriptThing);
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}
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nsresult
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nsXPCOMCycleCollectionParticipant::RootImpl(void *p)
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{
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nsISupports *s = static_cast<nsISupports*>(p);
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NS_ADDREF(s);
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return NS_OK;
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}
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nsresult
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nsXPCOMCycleCollectionParticipant::UnrootImpl(void *p)
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{
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nsISupports *s = static_cast<nsISupports*>(p);
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NS_RELEASE(s);
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return NS_OK;
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}
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// We define a default trace function because some participants don't need
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// to trace anything, so it is okay for them not to define one.
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NS_IMETHODIMP_(void)
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nsXPCOMCycleCollectionParticipant::TraceImpl(void *p, TraceCallback cb,
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void *closure)
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{
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}
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bool
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nsXPCOMCycleCollectionParticipant::CheckForRightISupports(nsISupports *s)
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{
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nsISupports* foo;
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s->QueryInterface(NS_GET_IID(nsCycleCollectionISupports),
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reinterpret_cast<void**>(&foo));
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return s == foo;
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}
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