●●● ●●●● 4.1 Overview ●●●●● ●●●● ●●●0● ●●●0 ● a thread is a basic unit of cpu utilization°。 It comprises ● A thread|D ● A program counter A register set e A stack o It shares with other threads belonging to the same process Code section o Data section Other Os resources, such as open files and sIgnals4 4.1 Overview ⚫ A thread is a basic unit of CPU utilization ⚫ It comprises ⚫ A thread ID ⚫ A program counter ⚫ A register set ⚫ A stack ⚫ It shares with other threads belonging to the same process ⚫ Code section ⚫ Data section ⚫ Other OS resources, such as open files and signals