func eqslice(x, y []uintptr) bool {
	if len(x) != len(y) {
		return false
	}
	for i, xi := range x {
		if xi != y[i] {
			return false
		}
	}
	return true
}

// mProf_NextCycle publishes the next heap profile cycle and creates a
// fresh heap profile cycle. This operation is fast and can be done
// during STW. The caller must call mProf_Flush before calling
// mProf_NextCycle again.
//

	// before that happens) or pageInUse is updated.
	h.setSpans(s.base(), npages, s)

	if !typ.manual() {
		// Mark in-use span in arena page bitmap.
		//
		// This publishes the span to the page sweeper, so
		// it's imperative that the span be completely initialized
		// prior to this line.
		arena, pageIdx, pageMask := pageIndexOf(s.base())
		atomic.Or8(&arena.pageInUse[pageIdx], pageMask)