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Concept of Reentrancy
It is a useful, memory-saving method for multiprogrammed timesharing machines. A Reentrant method is one in which multiple clients can share a single copy of a program during the similar period. Reentrancy has 2 key functions: The program code cannot change itself, and the local data for each client process must be stored in different disk. Thus, the permanent phase is the code, and the temporary phase is the pointer back to the calling function and local variables needed by that code. Each operation instance is known as activation. It runs the code in the permanent phase, but has its permanent copy of local parameters or variables. The temporary phase associated with each activity is the activation record. usually, the activation record is store on the stack.
What is starvation? A main problem related to deadlock is starvation. Starvation is the circumstances where process waits indefinitely within the semaphore. Indefinite blocking
What are the steps followed in testing? i. Unit testing - The individual components are tested in this type of testing. ii. Module testing - Related collection of independen
Consider the following snapshot of a system, answer the following questions using the banker's algorithm: 1. What is the content of the matrix Need? Is the system in a safe stat
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what are the threds in operating system?
Grouping Threads That Execute Similar Functions Thread Groups are generally used to group threads that execute similar functions of the application program. For instance, if
The 5Z Company is selling pens to the local market. It is planning to maximize sales and profit by analyzing few conditions using the break-even analysis formula. Below is the data
Q. Why is it important to scale up system bus and device speeds as the CPU speed increases? Answer: Consider a system which carries out 50% I/O and 50% computes. Doubling-up
Question 1 Brief the following distributed computing system model Question 2 Explain the components involved in implementation of RPC mechanism Question 3 What is
why we say" OS is a resource allocator" and “OS is a control program"?
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