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RESOURCE ALLOCATION GRAPH
When a process Pi wishes an instance of resource type Rj, a request edge is inserted in the resource allocation graph. When this request is able to be fulfilled, the request edge is immediately transformed to an assignment edge. When the process no longer requires access to the resource, it liberate the resource as a result the assignment edge is deleted.
Process states:
If there is a cycle in the reallocation graph then there is deadlock, else no.
A page fault causes the following sequence to occur. 1. Trap (shut in) to the operating system. 2. Save the process registers and process state. 3. Verify that the interr
4. Describe priority scheduling algorithm. Consider the following set of processes. Show the order in which the algorithm will schedule these processes. Assume preemptive and non-p
Question 3: (a) Fincorp Ltd is an insurance company wishing to change over to a better business system using an improved version of a financial information system (FIS). The direc
Consider the subsequent resource-allocation policy. Requests as well as releases for resources are allowed at any time. If a request for resources can't be satisfied because the re
Major page fault: If the page is not loaded in memory at the time the fault is stated, then it is named major or hard page fault. The handler in the machine requires to search a
how does it works
Android operating system is an open source, Linux-based Smartphone OS. It is the world's most popular mobile platform with more than 700,000 applications and 25 billion downlo
Many-to-Many Model The many-to-many model- many user-level threads to many kernel-level threads avoids several of the limitations of the one-to-one model, although extending mu
mariz
Problem: a) Define a ‘file' and list the objectives of the file management system. b) List the ways in which programs access files and determine for what file types you woul
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