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- you are tasked with analyzing an algorithm which schedulea processes in a multiprogramming system. You are working with a computer that has two CPUs, each CPU having two threads (hyperthreading). You are studying a scenario with three processes: P0, P1, & P2., with run times of 5, 10, & 20 msecs, respectively. All 3 programs are 100% CPU bound, don't block, and always run in the CPU it's assigned to. How long will it take for these programs to complete execution. Show three different possible outcomes (and assigned process to processor, 3 different combinations and resulting total time for all three to complete)Write a C program Producer – Consumer as a classical problem of synchronizationStep 2. Write a program* that solves the producer - consumer problem. You may use the following pseudo codefor implementation.*program to write: produce -consumer problem to produce and consume the alphabet.//Shared data: semaphore full, empty, mutex;//pool of n buffers, each can hold one item//mutex provides mutual exclusion to the buffer pool//empty and full count the number of empty and full buffers//Initially: full = 0, empty = n, mutex = 1//Producer threaddo {…produce next item…wait(empty);wait(mutex);…add the item to buffer…signal(mutex);signal(full);} while (1);//Consumer threaddo {wait(full)wait(mutex);…remove next item from buffer…signal(mutex);signal(empty);…consume the item } while (1); it consumes and produce the alphabets not numbers sample output is attached you please also attach your sample outputWrite a C program to Implement a system of three processes which read and write numbers to a file. Each of the three processes P1, P2, and P3 must obtain an integer from the file (these instructions must be executed 200 times). The file only holds one integer at any given time. Given a file F, containing a single integer N, each process must perform the following steps 1. Fork two processes For 200 times: 2. Open F 3. Read the integer N from the file 4. Close F 5. Output N and the process' PID (On the screen) 6. Increment N by 1 7. Open F 8. Write N to F (overwriting the current value in F) 9. Close F b) Briefly describe why the processes P1, P2, and P3 obtain/read duplicates of numbers (why does a particular integer x appear in the output of more than one process)? Suggest a solution (you do not need to implement it) to guarantee that no duplicate numbers are ever obtained by the processes. In other words, each time the file is read by any process, that process reads a distinct…
- Write a C program which takes four command line arguments: two file names and twonumber of elements. Your program must check if correct number of arguments aresupplied and terminate if not. Your main process must create three processes: The firstand second processes must open / create files by the given names and fill them with thegiven number of random integers (one integer per line) and terminate. The thirdprocess must execute “sort” command with necessary arguments so that it numericallysorts both files and display the combined result on screen.Before creating the third child process, main process must wait for the other two child processes to end.Write a c program called file1.c Program file1.c uses these: (a) fork() to launch another process. (b) exec() to replace the program driving this process, while supplying arguments to file2.c to complete its execution. (c) wait() to complete the execution of the child process. (d) file1.c takes two arguments x( a number less than 1) and n (number of terms to be added, 1 or more). For example: file1 0.5 5 (e) When the child process finishes, the parent prints: Parent(PID=yyy) : DoneProblem Statement: (The following problem is based on problem statements in a number of operating systems texts) For this lab, you'll be setting up 2 queues of PCBs. A process control block (PCB) is an internal structure that is used to hold information associated with a process. A process is an instance of a program that is brought into random-access memory (RAM) for execution. To simplify matters, you'll be setting up 2 queues: a ready queue and a wait queue and, PCBs each PCB will have 2 fields: a process ID or PID (a positive integer) a link field to point to the next PCB on a queue The ready queue will have the PCBs for the processes that will be run in a first-come, first-served fashion. The wait queue will have the PCBs for the processes that will be waiting for a resource in a first-come, first-served fashion. If the PCB at the head of the ready queue needs some resource (for example, I/O) then it will be removed from the ready queue and moved to the rear of…
- The following program consists of 3 concurrent processes and 3 binary semaphores. The semaphores are initialized as S0 =1, S1= 0, S2=0 Process P0 Process P1 Process P2 wait(S0); print '0' release(S1) release (S2);} wait(S1); release(S0); wait(S2); release(S0); How many times will process P0 print ‘0’?What describes how the principle of least privlege applies to the use of computers? A, It guarantees that no information inifially held in an object can be used outside its execution environment B, A process is allowed access only to the resources il needs to complete Its task and limit damage from a faulty process C, It is a process that can access an object in a domain only if that domain has a key that malches one of the locks of the object D It is the use of access controls to monitor and limit access to applications, programs, and websites during specific times of use.Ordinary Pipes allow communication in standard producer-consumer style. Producer writes to one end (the write-end of the pipe) and consumer reads from the other end (the read-end of the pipe). Write a simple program in C. Language, fork a process and let a pipe be between the parent and the child processes such that the the parent will write and the child read a message from keyboard. Also print the number of written bytes to the pipe.
- A parking house has place for 107 cars. There are many turnstiles letting cars in and out. As cars come in a shared counter is incremented. As cars leave the house, the shared counter is decremented. Implement the shared counter as a monitor in Java. See to it that if there are 107 cars in the house, processes trying to increment the counter get delayed until some car leaves the house (this will cause the turnstile to be kept closed without letting the car in, but you do not have to worry about this, you are not implementing the turnstile processes!)The following program consists of 3 concurrent processes and 3 binary semaphores. The semaphores are initialized as S0 = 0,S1 = 1 and S2 = 1. Process P0:while (true) { wait (S0); print '1';release(S1);release(S2);} Process P1:wait (S2);release (S0); Process P2:wait(S2);release(S0); How many times will process P0 print '1'?10 Write a C program that creates five threads (in addition to the initial thread) and makes each execute a function task(void * i) for i integer ranging from 1 to 5. in this function, make an empty loop of 10000 steps, then display of the i number and the thread id on the screen. The initial thread will also perform the display. Check on this example that: — The use of the exit() function in one of the threads of the process leads to the termination of all the threads. — The termination of the initial thread leads to the release of all the resources, therefore the termination of all the threads of the process. How to avoid this premature termination?