Transcript Week 2
2P13 Week 2 Page 1 Page 2 Page 3 Page 4 Table 3.1 Reasons for Process Creation Click to edit the outline text format Second Outline Level Third Outline Level Fourth Outline Level 5 Fifth Outline Level Sixth Outline Level Seventh Outline Level 1/15/12 Table 3.2 Reasons for Process Termination 6 1/15/12 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Typical Elements of a Process Control Block Page 14 Page 15 Page 16 Table 3.7 Typical Functions of an Operating System Kernel Process Management •Process creation and termination •Process scheduling and dispatching •Process switching •Process synchronization and support for interprocess communication •Management of process control blocks Memory Management •Allocation of address space to processes •Swapping •Page and segment management I/O Management •Buffer management •Allocation of I/O channels and devices to processes Support Functions •Interrupt handling •Accounting •Monitoring Page 17 Table 3.8 Mechanisms for Interrupting the Execution of a Process Mechanism Cause Use Interrupt External to the execution of the current instruction Reaction to an asynchronous external event Trap Associated with the execution of the current instruction Handling of an error or an exception condition Supervisor call Explicit request Call to an operating system function Page 18 Page 19 Page 20 Page 21 Page 22 The End Page 23