●●● ●●●● 4.4 Threading issues ●●●●● ●●●● ●●●0● ●●●0 Signal handling A Signal is used in UNIX systems to notify a process that a particular event has occurred, it follows the pattern o a signal is generated by the occurrence of a particular event o a generated signal is delivered to a process Once delivered it must be handled26 4.4 Threading Issues ⚫ Signal handling ⚫ A Signal is used in UNIX systems to notify a process that a particular event has occurred, it follows the pattern: ⚫ A signal is generated by the occurrence of a particular event ⚫ A generated signal is delivered to a process ⚫ Once delivered, it must be handled