Please define wait()'s role in process termination if you have a code example.
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Please define wait()'s role in process termination if you have a code example.
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- Weighted Job Scheduling in C language only please Problem statement: You are given a list of jobs where each job has a start time, finish time, and the profit associated with that job, find the maximum profit subset of non-overlapping jobs. Problem description: The problem wants you to find the maximum profit that you can make after performing a certain number of jobs such that each job has a certain condition that you can start a job only if the start time of the current job is greater than the finish time of the previous job. You are required to develop some algorithm such that the job start time and the finish time does not coincide with other jobs. Output: (Attached photo)please write with proper explanation. Question half solution is here please write what is main disadvantages of this approach? Half solve questions: Mutual Exclusion: Mutex is an abbreviation for Mutual Exclusion. It is a programme object that prevents multiple users from accessing a shared resource at the same time. When a process accesses a shared variable, it is said to be in the critical section. When no two processes are present in the critical section at the same time, this is referred to as Mutual Exclusion or Mutex. while (true) { semaphore sem = S; while (S <= 0) do no operation { S = S-1; wait (S); } /*critical section*/ while (S > 0) { S = S+1; signal (S); } /*remainder section*/ }Problem Description Suppose that you are scheduling a room. You are given a group of activities each of which has a start and stop time. Two activities are compatible if they do not overlap (one activity finishes before another one starts). For example, in the following activities, activity A is compatible with activities B and D but not activity C: Activity Start Time Stop time A 1 2 B 2 1 B. The room has a start time and an end time in which it is available. Your goal is to write a recursive method to schedule compatible activities that result in the maximum usage of the room. The usage of the room is defined as the total duration of the scheduled activities, that is, the sum of (stop time - start time) for all the activities scheduled to run in the room. For example suppose that the start time and end time in which the room is available is [1,7] for the above table. Hence, the possible schedules are: 1. Activities A, B,D: with room usage = (2-1)+(5-2) +(6-5) = 5 %3D 2. Activities C,…
- Briefly explain parameterprogramming language : C++ subject : object oriented programming question: We know that an Organization consists of Managers and Employees. You are required to create a base class Person with attributes name, CNIC and gender. Derive Manager and Employee class from Person class.c++ or java or in pseudo code with explaining note: if anything is unclear or seems left out make an assumption and document your assumption Implement an algorithm for assigning seats within a movie theater tofulfill reservation requests. Assume the movie theater has the seatingarrangement of 10 rows x 20 seats, as illustrated to the below.The purpose is to design and write a seat assignmentprogram to maximize both customer satisfaction and customersafety. For the purpose of public safety, assume that a buffer of three seats inbetween Input DescriptionYou will be given a file that contains one line of input for eachreservation request. The order of the lines in the file reflects the order inwhich the reservation requests were received. Each line in the file will becomprised of a reservation identifier, followed by a space, and then thenumber of seats requested. The reservation identifier will have theformat: R####. See the Example Input File Rows section for anexample of the input…
- In this question, you will consider the development of a Virtual Learning Environment (VLE)through which students manage their studies. They can watch videos, attend onlinewebinars, access forums etc. a)You are given the following requirement:“Students can select a module from a list, if they have been registered to the selectedmodule, they can see the contents.”Write out a step-by-step process for the VLE described above that a tester can use totest this requirement. b) For the VLE system, we want to ask some users to answer a questionnaire to dousability testing. Design two questions to cover effectiveness, two questions to coverefficiency and two questions to cover satisfaction. c) Write TWO requirements for the VLE, using the EARS syntax.Language: C++ Design and write an object oriented program for the computation of the volume of boxes (having a height, a width and a depth as double values). Your solution should have methods for setting and getting the height, the width and the depth of a box as well as constructors (a default con- structor and one which sets the data members), a copy constructor and a destructor. files testbox.cpp, Box. cpp and Box.h. The program testing your code (testbox.cpp) should do the following: Name your a) Enter from the keyboard the a value for n, the number of boxes that will be entered. b) Dynamically create an array of 2*n boxes. c) Enter from the keyboard the height, width and depth of each box one after the other for the first n boxes and the add their copies on the remainder n positions (in the same order). Use the copy constructor for doing this. d) Loop across all boxes, calculate and print on the screen the volume of each box. You can assume that the input will be valid.Explain the importance of this parameter in object-oriented programming languages.
- Course Title: Object Oriented Analysis and Design Question : There is a utility company which provides waste management services to citizens. It has a CRM system, billing system, messaging system and mapping (GIS) system. When a customer is created in the CRM system, the billing, messaging, and GIS systems need a copy of customer data to perform follow-up tasks and automation. For instance—the billing system will create a billing account for the customer, the messaging system will send a welcome message with customer account details on preferred communication channel and the GIS system will update the customer’s address in the database for mapping purposes. After completion of one billing cycle the billing dept. sends a copy of the bill in a pdf format on the customer email address and the bill amount is directly debited from the customer’s bank account. Draw an appropriate Activity diagram . (Note): Forks and joins have the same notation: either a horizontal or vertical bar (the…Why Operator Overloading Is Needed?Structural Verification Structural verification is, in this case, validating that a data structure is formed according to its specification. For this lab you are given an essentially arbitrary specification, but you could think of this being used to verify a data structure produced by a program that must have certain properties in order to be used correctly. For example, a list must not be circular, or an image file might require a particular header describing its contents. You must implement this function, which examines a matrix and ensures that it adheres to the following specification: bool verify_matrix(int x, int y, int **matrix); This function accepts an X dimension, a Y dimension, and a matrix of y rows and x columns; although it is declared as int **, this is the same type of matrix as returned by parse_life() in PA1, and you should access it as a two-dimensional array. Note that it is stored in Y-major orientation; that is, matrix ranges from matrix[0][0] to matrix[y 1][x -…