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Message passing system:-
The function of message system is to permit processes to communicate with one another without the requirement to resort (option) to shared data. Communication between the user processes is accomplished by the passing of messages. An IPC facility gives at least two operations: send and receive. If processes P and Q need to communicate, they must send messages to and receive messages from each other; a communication link must exist among them.
Methods for logically implementing links
o Direct or indirect communication.
o Symmetric or asymmetric communication.
a program that can do cpu scheduling algorithm priority using javascript or php to display gaant chart and calculate waiting and average waiting time
Processes- Making the System More Responsive and Useful A method by definition build up of a code execution and resource ownership. A process has two main characteristics, code
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idle thread The special thread a dispatcher will run when no ready thread is found. The primary purpose of the idle process and its threads is to remove what would otherwise b
What is banker's algorithm? Banker's algorithm is a deadlock avoidance algorithm that is applicable to a resource-allocation system with multiple examples of each resource type
What is operating system?
What is super block A partition control block have partitions details, such as the number of blocks in the partition, size of the blocks, free-blocks and free-block pointers an
What advantages are there to this two-level directory? Users are isolated from each other. Users have more freedom in choosing file names.
Q. What are two differences among user-level threads and kernel-level threads? Under what situations is one type better than the other? Answer: (1) User-level threads are un
Q. When virtual memory is executed in a computing system there are convinced costs associated with the technique and certain benefits. List the costs as well as the benefits. Is i
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