EECS 1520 Lecture Notes - Lecture 6: Process Control Block, Logical Address, Gantt Chart

• School: York University
• Department: Electrical Engineering and Computer Science
• Course: EECS 1520
• Professor: Steven Castellucci

Document Summary

Facilitate practical use of a computer system and its resources. Manage numerous, concurrently running programs: allocate and track efficiently. Device management: gra(cid:374)t a(cid:374)d share access to co(cid:373)puter"s hardware. The act of managing the use of the cpu by individual processes. Recall that a process is a program in execution. Each state is represented by a list of pcbs, one for each process in that state. There is only one cpu and therefore only one set of cpu registers, which contain the values for the currently executing process. Each time a process is moved to the running state: Register values for the currently running process are stored into its pcb. Register values of the new process moving into the running state are. Its pcb is moved to the list of the state into which it goes loaded into the cpu. This exchange of register information is called a context switch. The currently executing process gives up the cpu voluntarily.