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Disadvantage and Advantage of mutual-exclusion implementation with semaphores.
Disadvantage: Mutual-exclusion solutions specified by semaphores require busy waiting.
That is, even as a process is in its critical section, any other process which tries to enter its critical section should loop continuously in the entry code. Therefore, busy waiting wastes CPU cycles that several other process might capable to use productively.
Advantage: This kind of semaphore is also termed as spinlock as the process "spins" while waiting for lock. Spinlocks are helpful in multiprocessor systems as no context switch is needed when a process should wait on a lock. Therefore, when locks are expected to be held for short times, spinlocks are helpful.
Q. Explain Open-systems interconnections architecture model The most common network architecture model is the open-systems interconnections (OSI). Figure shows the ISO (Intern
The alignment of a type 'c' field in a report is? ? Left Aligned.
END DIRECTIVE: ENDS directive ends a segment and ENDP directive ends a procedure and END directive ends whole program which appears as last statement. ASSUME Directive: An .
Determine about the Voice Systems Speech recognizers are used in some graphics workstations as input devices to accept voice commands. The voice-system input can be used to ini
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State in brief about the pseudo instruction A pseudo instruction isn't a real instruction. CPU can't execute it. It often requires a complex architectural operation and if it w
What are semaphores? Semaphore : A semaphore is a synchronization tool which gives a general-purpose solution to controlling access to critical sections. It s an abstract data
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Personal Computer Software The personal computer software market has burgeoned from the past decade. Spreadsheets, Word processing, computer graphics, database managemen
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