●●● ●●●● 4.4 Threading issues ●●●●● ●●● ●●●0● ●●●0 ● Signal handling o a default signal handler Every signal has a default signal handler It can be overridden by a user-defined signal handler o A user-defined signal handler o Handling signal in single-threaded programs is straightforward Signals are al ways delivered to a process o Where should a signal be delivered in multithreaded programs?28 4.4 Threading Issues ⚫ Signal handling ⚫ A default signal handler ▪ Every signal has a default signal handler ▪ It can be overridden by a user-defined signal handler ⚫ A user-defined signal handler ⚫ Handling signal in single-threaded programs is straightforward ⚫ Signals are always delivered to a process ⚫ Where should a signal be delivered in multithreaded programs?