bool
GCMarker::markDelayedChildren(SliceBudget& budget)
{
GCRuntime& gc = runtime()->gc;
gcstats::AutoPhase ap(gc.stats, gc.state() == MARK, gcstats::PHASE_MARK_DELAYED);
MOZ_ASSERT(unmarkedArenaStackTop);
do {
/*
* If marking gets delayed at the same arena again, we must repeat
* marking of its things. For that we pop arena from the stack and
* clear its hasDelayedMarking flag before we begin the marking.
*/
ArenaHeader* aheader = unmarkedArenaStackTop;
MOZ_ASSERT(aheader->hasDelayedMarking);
MOZ_ASSERT(markLaterArenas);
unmarkedArenaStackTop = aheader->getNextDelayedMarking();
aheader->unsetDelayedMarking();
markLaterArenas--;
markDelayedChildren(aheader);
budget.step(150);
if (budget.isOverBudget())
return false;
} while (unmarkedArenaStackTop);
MOZ_ASSERT(!markLaterArenas);
return true;
}
void
GCMarker::reset()
{
color = BLACK;
stack.reset();
MOZ_ASSERT(isMarkStackEmpty());
while (unmarkedArenaStackTop) {
ArenaHeader* aheader = unmarkedArenaStackTop;
MOZ_ASSERT(aheader->hasDelayedMarking);
MOZ_ASSERT(markLaterArenas);
unmarkedArenaStackTop = aheader->getNextDelayedMarking();
aheader->unsetDelayedMarking();
aheader->markOverflow = 0;
aheader->allocatedDuringIncremental = 0;
markLaterArenas--;
}
MOZ_ASSERT(isDrained());
MOZ_ASSERT(!markLaterArenas);
}