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Scheduling and Context
COMP 242 Class Notes
Handout 2: Process Management
Scheduling and Context Switching
Xinu Scheduling Policy
Process Table
Process State
Xinu Mechanism for Context Switching and Scheduling
Ready List
resched
ctxsw
The Null Process
Process Resumption and Suspension
Semantics
Implementation
Procedure resume
Procedure suspend
Process Termination
Implementation
Tasks Performed
Process Creation
Implementation
Arguments:
Tasks Done
System Calls
Getpid()
Getprio (pid)
Chprio (pid, newprio)
Need for Multiprocessing
Time Sharing
Different Applications per User
Several Processes per Application
Concurrent Computing
About this document ...
Prasun Dewan
Tue Jan 20 11:58:31 EST 2004