const runtime.gcDrainUntilPreempt

5 uses

	runtime (current package)
		mgc.go#L1368: 				gcDrain(&pp.gcw, gcDrainUntilPreempt|gcDrainFlushBgCredit)
		mgc.go#L1385: 				gcDrain(&pp.gcw, gcDrainFractional|gcDrainUntilPreempt|gcDrainFlushBgCredit)
		mgc.go#L1387: 				gcDrain(&pp.gcw, gcDrainIdle|gcDrainUntilPreempt|gcDrainFlushBgCredit)
		mgcmark.go#L1008: 	gcDrainUntilPreempt gcDrainFlags = 1 << iota
		mgcmark.go#L1042: 	preemptible := flags&gcDrainUntilPreempt != 0