func unlinkGRs() {
	childID := curGoroutineID()
	dataLock.Lock()
	delete(data, childID)
	dataLock.Unlock()
}
func unlinkGRs() {
	childID := curGoroutineID()
	dataLock.Lock()
	delete(data, childID)
	dataLock.Unlock()
}
func unlinkGRs ( ) { childID := curGoroutineID ( ) dataLock . Lock ( ) delete ( data , childID ) dataLock . Unlock ( ) }
// unlinkGRs unlinks two goroutines
unlinkGRs unlinks two goroutines