}
			if s, ok := sl.tryAcquire(s); ok {
				// We got ownership of the span, so let's sweep it.
				s.sweep(true)
				// Check if there's any free space.
				freeIndex := s.nextFreeIndex()
				if freeIndex != s.nelems {
					s.freeindex = freeIndex
					sweep.active.end(sl)
					goto havespan
				}
				// Add it to the swept list, because sweeping didn't give us any free space.
				c.fullSwept(sg).push(s.mspan)

		if s.state.get() != mSpanInUse {
			continue
		}

		// Find all allocated objects.
		abits := s.allocBitsForIndex(0)
		for i := uintptr(0); i < uintptr(s.nelems); i++ {
			if abits.index < uintptr(s.freeindex) || abits.isMarked() {
				x := s.base() + i*s.elemsize
				trace.HeapObjectExists(x, s.typePointersOfUnchecked(x).typ)
			}
			abits.advance()
		}
	}

	// Write out all the goroutine stacks.