uppose there are 1 instance of resource 1, 1 instance of resource R2 and 2 stances for resource R3. rocess T1 is allocated one unit of esource R3 and is waiting for a unit of R1. rocess T2 is allocated one unit of R1 & R3 nd waiting for a unit of R2. rocess T3 is allocated one unit of R2. )Draw the simple Resource Allocation raph for the above statements. ) Does the RAG show deadlock? Justify bur answer.
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- Problem 1. Consider the following code example for allocating and releasing, which can be concurrently called by multiple processes to fork new processes. #define MAX_PROCESSES 255 int number_of_processes = 0; // a shared variable /* the implementation of fork() calls this function */ int allocate_process() { int new_pid; if (number_of_processes == MAX_PROCESSES) return -1; else { /* code to allocate necessary process resources */ ++number_of_processes; return new_pid; } } /* the implementation of exit() calls this function */ void release_process() { /* code to release process resources */ --number_of_processes; }Using the Semaphore structure and its atomic wait() and signal() operations to solve a critical section (mutual exclusion)…Create a UML class diagram for the following problem: The McDonald’s company has several restaurants in Budapest. Each restaurant has a unique ID and an address. They sell cheeseburger for 500 HUF, BigMac for 1000 HUF, and Chicken McNuggets for 800 HUF. All three can be ordered alone or in small, medium, or large menu. The different menus mean French fries and drink in addition. The small menu costs 500 HUF, the medium is 700 HUF, and the large is 1000 HUF in addition. The customers get a loyalty card from the McDonald’s company which has a unique number. Based on the card, it can be got what kind of foods were ordered by that guest in the different restaurants. Make it possible to populate this problem: create methods to add new restaurant, customer, loyalty card, and orders related to any of the cards.Is it true that each restaurant of the company has a guest who has spent more than 10000 HUF?How much has a guest spent in a given restaurant?How many guests have spent more than 10000…#c++# Consider that a system has two entities, Employee and Department. The employee has the following properties: employee name, number, SSN and salary. Similarly, the department has the following properties: department name, department number and a set of employees who are working on that department. Implement the above system taking into account the following requirements: In department, the number of employees that are working on this department is decided at the time when instantiating the department. Assume that emp1 and emp2 are two objects of type Employee, write a code that enables you to write: if (emp1.isequal (emp2)). Where emp1, emp2 are employee objects. The statement is true if the objects have the same salary. In department, make sure no two employees have the same employee number. In department, write a method to increase the salary of an employee by a specific value. it should validate that value. Write a getEmpByEno method in class department that returns a pointer…
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- Consider the following skeletal C program: void fun1(void); /* prototype */void fun2(void); /* prototype */void fun3(void); /* prototype */void main() { int a, b, c; . . .}void fun1(void) { int b, c, d; . . .}void fun2(void) { int c, d, e; . . .}void fun3(void) { int d, e, f; . . .}Given the following calling sequences and assuming that dynamic scoping is used, whatvariables are visible during the execution of the last function? Include with each visible variablethe name of the function in which it was defined.a. main calls fun1; fun1 calls fun2; fun2 calls fun3.b. main calls fun1; fun1 calls fun3.c. main calls fun2; fun2 calls fun3; fun3 calls fun1.d. main calls fun3; fun3 calls fun1.e. main calls fun1; fun1 calls fun3; fun3 calls fun2. Consider the following program, written in JavaScript-like syntax: // main programvar x, y, z;function sub1() {var a, y, z;. . .}function sub2() { var a, b, z; . . .}function sub3() { var a, x, w; . . .}Given the following calling sequences and…Consider the following program, written in JavaScript-like syntax: //main program var x, y, z function sub1(){ var a, y, z; …………. } function sub2(){ var a, b, z; …………… } function sub3(){ var a, x, w; …………… } Given the following calling sequences and assuming that dynamic scoping is used, what variables are visible during execution of the last subprogram activated? Include with each visible variable the name of the unit where it is declared. main calls sub1; sub1 calls sub 2; sub2 calls sub3. main calls sub1; sub1 calls sub3; sub3 calls sub2. main calls sub3; sub3 calls sub2; sub2 calls sub1.Consider the definition of the class product Type as given in Exercise 8. Answer the following questions. (1, 2, 3, 5, 7) a. Write the definition of the function set so that instance variables are set according to the paramaters. Instance variables quantitieslnStock, price, and discount must be nonnegative. b. Write the definition of the function print to output the values of the instance variables. c Write the definition of the function setQuantitiesInStock to set the value of the instance variable quantitiesInStock according to the parameter. d. Write the definition of the function updateQuantitiesInStock to update the value of instance variable quantitiesInStock by adding the value of the parameter. e. Write the definition of the function getQuantitiesInStock to return the value of instance variable quantitiesInStock. f. Write the definition of the function setPrice to set the value of the instance variable price according to the parameter. g. Write the definition of the function getPrice to return the value of the instance variable price. h. Write the definition of the function setDiscount to set the value of the instance variable discount according to the parameter. i. Write the definition of the function getDiscount to return the value of the instance variable discount.
- write a c++ program in which d implement a course registration system whichprovides following options to the user. Add new courseUser will be able to create one or more courses. Information required for that purpose would beCourse ID, Course Name, and tentative number of seats in the course, number of enrolledstudents and the information of enrolled students (CMS and Name) Enroll courseA method which take the details of the student and if the seats are available in the course it enrolls him.Incase seat is not available than the function should increase the number of seats in the courseand enroll student. Drop courseA method which takes student’s CMS and withdraws him from the course.void Drop_course(int cms); //removes the object of student from arrayvoid save_memory(Student*); //re-arrange the students array Search studentUser will be able to search that a particular student is enrolled in the course or not. Generate courses reportA report which displays information about the course.Concepts of programming language Consider the following JavaScript program: var a, y, c;function sub1() {var b, z, c;function sub2() {var a, b, y;. . .}. . .}function sub3() {var a, x, w;. . .}List all the variables, along with the program units where they are declared,that are visible in the bodies of sub2 when the sequence of function call is:“sub1 calls sub3 and sub3 calls sub2”, assuming dynamic scoping is used.Topic: Concepts of programming Language Kindly provide a bit detailed answer 4. a) Consider the following program, written in JavaScript-like syntax:// main programvar x, y, z;function sub1() {var a, x, z;. . . }function sub2() {var a, b, y;. . .}function sub3() {var a, y, w;. . .}Given the following calling sequences and assuming that dynamic scoping isused, what variables are visible during execution of the last subprogramactivated? Include with each visible variable the name of the unit where it isdeclared.“main calls sub1; sub1 calls sub3; sub3 calls sub2.”