●●● ●●●● 4.4 Threading Issues ●●●●● ●●●● ●●●0● ●●●0 ● Thread cancellation Terminates a thread before it has completed Two general approaches for cancellation of a target thread Asynchronous cancellation one thread immediately terminates the target thread o Deferred cancellation the target thread can periodically check if it should term inate, allowing it an opportunity to terminate itself in an orderly fashion24 4.4 Threading Issues ⚫ Thread cancellation ⚫ Terminates a thread before it has completed ⚫ Two general approaches for cancellation of a target thread ⚫ Asynchronous cancellation ▪ one thread immediately terminates the target thread ⚫ Deferred cancellation ▪ the target thread can periodically check if it should terminate, allowing it an opportunity to terminate itself in an orderly fashion