Method insert

flow/WriteOnlySet.actor.cpp:33–46

#ifdef ENABLE_SAMPLING
template <class T, class IndexType, IndexType CAPACITY>
auto WriteOnlySet<T, IndexType, CAPACITY>::insert(const Reference<T>& lineage) -> Index {
	Index res;
	if (!freeQueue.pop(res)) {
		TraceEvent(SevWarnAlways, "NoCapacityInWriteOnlySet");
		return npos;
	}
	ASSERT(_set[res].load() == 0);
	auto ptr = reinterpret_cast<uintptr_t>(lineage.getPtr());
	ASSERT((ptr % 2) == 0); // this needs to be at least 2-byte aligned
	ASSERT(ptr != 0);
	lineage->addref();
	_set[res].store(ptr);
	return res;
}

template <class T, class IndexType, IndexType CAPACITY>
bool WriteOnlySet<T, IndexType, CAPACITY>::eraseImpl(Index idx) {