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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 nsWrapperCacheInline_h___
#define nsWrapperCacheInline_h___
#include "nsWrapperCache.h"
#include "js/GCAPI.h"
#include "js/TracingAPI.h"
inline JSObject*
nsWrapperCache::GetWrapper() const
{
JSObject* obj = GetWrapperPreserveColor();
if (obj) {
JS::ExposeObjectToActiveJS(obj);
}
return obj;
}
inline bool
nsWrapperCache::IsBlack()
{
JSObject* o = GetWrapperPreserveColor();
return o && !JS::ObjectIsMarkedGray(o);
}
static void
SearchGray(JS::GCCellPtr aGCThing, const char* aName, void* aClosure)
{
bool* hasGrayObjects = static_cast<bool*>(aClosure);
if (!*hasGrayObjects && aGCThing && JS::GCThingIsMarkedGray(aGCThing)) {
*hasGrayObjects = true;
}
}
inline bool
nsWrapperCache::HasNothingToTrace(nsISupports* aThis)
{
nsXPCOMCycleCollectionParticipant* participant = nullptr;
CallQueryInterface(aThis, &participant);
bool hasGrayObjects = false;
participant->Trace(aThis, TraceCallbackFunc(SearchGray), &hasGrayObjects);
return !hasGrayObjects;
}
inline bool
nsWrapperCache::IsBlackAndDoesNotNeedTracing(nsISupports* aThis)
{
return IsBlack() && HasNothingToTrace(aThis);
}
#endif /* nsWrapperCache_h___ */
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