Race condition
Race conditions arise in software when an application depends on the sequence or timing of processes or threads for it to operate properly. As with electronics, there are critical race conditions that result in invalid execution and bugs. Critical race conditions often happen when the processes or threads depend on some shared state. Operations upon shared states are critical sections that must be mutually exclusive. Failure to obey this rule opens up the possibility of corrupting the shared state.
Set Weights
Set Weights (SW) is a condition for a Thoroughbred horse race. Horses carry a weight based on their age and sex. In a mixed sex race, fillies and mares will usually carry less than colts, geldings and horses. Additional weight, or penalties, can also apply as a condition of the race. Many of the top races, particularly age restricted races, are set weights races.