/*
* This function is used by the cycle collector to trace through the
* children of a BaseShape (and its baseUnowned(), if any). The cycle
* collector does not directly care about BaseShapes, so only the
* getter, setter, and parent are marked. Furthermore, the parent is
* marked only if it isn't the same as prevParent, which will be
* updated to the current shape's parent.
*/
inline void
MarkCycleCollectorChildren(JSTracer *trc, BaseShape *base, JSObject **prevParent)
{
JS_ASSERT(base);
/*
* The cycle collector does not need to trace unowned base shapes,
* as they have the same getter, setter and parent as the original
* base shape.
*/
base->assertConsistency();
if (base->hasGetterObject()) {
JSObject *tmp = base->getterObject();
MarkObjectUnbarriered(trc, &tmp, "getter");
JS_ASSERT(tmp == base->getterObject());
}
if (base->hasSetterObject()) {
JSObject *tmp = base->setterObject();
MarkObjectUnbarriered(trc, &tmp, "setter");
JS_ASSERT(tmp == base->setterObject());
}
JSObject *parent = base->getObjectParent();
if (parent && parent != *prevParent) {
MarkObjectUnbarriered(trc, &parent, "parent");
JS_ASSERT(parent == base->getObjectParent());
*prevParent = parent;
}
}
void
MarkCrossCompartmentObjectUnbarriered(JSTracer *trc, JSObject **obj, const char *name)
{
if (IS_GC_MARKING_TRACER(trc) && !(*obj)->compartment()->isCollecting())
return;
MarkObjectUnbarriered(trc, obj, name);
}