type runtime/trace.timestamp

5 uses

	runtime/trace (current package)
		batch.go#L13: type timestamp uint64
		batch.go#L16: 	time timestamp
		batch.go#L85: 		time: timestamp(ts),
		recorder.go#L106: 	return freq.mul(timestamp(runtime_traceClockNow()))
		recorder.go#L116: func (f frequency) mul(t timestamp) eventTime {