●●● ●●●● 4.4 Threading issues ●●●●● ●●●● ●●●0● ●●●0 o A signal may be eIther synchronous or I asynchronous o Synchronous signals are delivered to the same process that performed the operation that caused the signals E.g. illegal memory access E.g. division by 0 o An asynchronous signal is sent to another process E.g. terminating aa process with specific keystrokes E.g having a timer expire27 4.4 Threading Issues ⚫ A signal may be either synchronous or asynchronous ⚫ Synchronous signals are delivered to the same process that performed the operation that caused the signals ▪ E.g. illegal memory access ▪ E.g. division by 0 ⚫ An asynchronous signal is sent to another process ▪ E.g. terminating a a process with specific keystrokes ▪ E.g having a timer expire