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Explain the ThreadSwitchWithDelay Function used in Netware
ThreadSwitchWithDelay( )
This command is used when threads are waiting for an event or resource but don't want to use semaphores for that access. The command will tell NetWare to schedule this thread on the temporarily handicapped list. Threads on this list will run only after a system-configurable amount of Run-List threads have executed. In our above example, we could replace the delay ( ) procedure with ThreadSwitchWithDelay( ).
Define the difference between preemptive and nonpreemptive scheduling. State why strict nonpreemptive scheduling is unlikely to be used in a computer center. Preemptive schedul
For reading, most operating systems use demand paging. This means that pages are only read from the disk into physical memory when they are needed. In the page table, there is a re
What are the advantages of Contiguous allocation? The advantages are a. Supports direct access b. Supports sequential access c. Number of disk seeks is minimal.
Now we consider the following questions: how can the parent process communicate with its child? Or how can children processes communicate with other children? The exact answer depe
how do you calculate page faults
Allocators can also be used to avoid problems with unsafe languages. C and C++ are pervasive, with huge amounts of existing code. They are also memory-unsafe languages, in that the
The idea of reference counting is to maintain, for every object, the total number of references to that object, i.e. the number of "incoming" pointers. Whenever the number of refer
Define deadlock avoidance. An alternative method for avoiding deadlocks is to need additional information about how resources are to be requested. Every request requires the sy
Discuss the high barriers to entry in the market for PL operating systems
Resolution of externally defined symbols is carried out by Resolution of externally defined symbols is carried out by Linker
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