const runtime.gcDrainUntilPreempt

5 uses

	runtime (current package)
		mgc.go#L1276: 				gcDrain(&pp.gcw, gcDrainUntilPreempt|gcDrainFlushBgCredit)
		mgc.go#L1293: 				gcDrain(&pp.gcw, gcDrainFractional|gcDrainUntilPreempt|gcDrainFlushBgCredit)
		mgc.go#L1295: 				gcDrain(&pp.gcw, gcDrainIdle|gcDrainUntilPreempt|gcDrainFlushBgCredit)
		mgcmark.go#L986: 	gcDrainUntilPreempt gcDrainFlags = 1 << iota
		mgcmark.go#L1020: 	preemptible := flags&gcDrainUntilPreempt != 0