now := nanotime()
	work.tSweepTerm = now
	var stw worldStop
	systemstack(func() {
		stw = stopTheWorldWithSema(stwGCSweepTerm)
	})

	// Accumulate fine-grained stopping time.
	work.cpuStats.accumulateGCPauseTime(stw.stoppingCPUTime, 1)

	// Finish sweep before we start concurrent scan.
	systemstack(func() {
		finishsweep_m()
	})

	// clearpools before we start the GC. If we wait the memory will not be