Consider the following data that are shared between two threads and are initialised before thethreads are executed, as follows:boolean flag = true;int x = 50;Thread 1 is defined as follows:void run_thread1() {while (flag) {}print x;}Thread 2 is defined as follows:void run_thread2() {x = 60;flag = false;}Let us assume that, as there are no data dependencies between the variables flag and x, it ispossible that a processor may reorder the instructions for Thread 2.Which of the following statements regarding the possible output of Thread 1 is TRUE?Thread 1 could enter an infinite loopThe output could only be 50The output could either be 50 or 60None of the mentionedThe output could only be 60

Thread 1 is running an infinite loop while the flag variable is true. Thread 2 sets the flag…

Answered: Consider the following data that are…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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calculate the number of memory bytes accessed by this program: void my_dgemv(int n, double* A, double* x, double* y) { #pragma omp parallel { int nthreads = omp_get_num_threads(); int thread_id = omp_get_thread_num(); printf("Hello world: thread %d of %d checking in. \n", thread_id, nthreads); } // insert your dgemv code here. you may need to create additional parallel regions, // and you may want to comment out the above parallel code block that prints out // nthreads and thread_id so as to not taint your timings #pragma omp parallel for // insert your code here: implementation of basic matrix multiply for(int i = 0; i < n; i++) { #pragma omp parallel for for(int j = 0; j < n; j++) { y[i] += A[i * n + j] * x[j]; } } }
Assignment 5.py: #Assignment 5 import Queueimport threadingimport timeimport random THREADS = 200 class addingThread (threading.Thread):def __init__(self, l):threading.Thread.__init__(self)self.threadID = 3self.name = "addingThread"self.l = lself.iteration = 0 def run(self):#delay start by a random time between 0 and 0.1 secsleep_time= random.randint(1,1000)/10000.0time.sleep(sleep_time)while self.iteration < len(self.l):#remove the comment for Question 1.3#lock.acquire()self.l[self.iteration] = self.l[self.iteration] +1#remove the comment for Question 1.3#lock.release()self.iteration= self.iteration + 1#remove the comment for Question 1.3 #lock = threading.Lock()workList = range(1,101)threads = [] # Create new threadsthread_num=0while thread_num < THREADS:thread = addingThread(workList)threads.append(thread)thread_num = thread_num +1 # Start threadsfor t in threads:t.start() # Wait for all created threads to finishfor t in threads:t.join() #print final listprint "Final list:…
JAVA PROGRAMMING You are required to create a main class to apply ExecuterService with SingleThreadExecuter. The variable i is integer number and MUST be input from the keyboard. Output should be like this: Please input i: 3 pool-1-thread-1: 1 pool-3-thread-1: 1 pool-3-thread-1: 2 pool-3-thread-1: 3 pool-2-thread-1: 1 pool-2-thread-1: 2 pool-2-thread-1: 3 pool-1-thread-1: 2 pool-1-thread-1: 3 Total = 9Below is the part of code.class Counter public class Counter { private int counter; public void increment(){ counter++; } public void decrement(){ counter--; } synchronized public void myIncrement(){ counter++; } synchronized public void myDecrement(){ counter--; } }
// This program is synchronized class Callme { Exercise2: Find and correct the errors from the following program and then compile it. After compilation run the program and write the output in the box bellow. synchronized void (String msg) { System.out.print("[" + msg); Code: try { Thread.sleep(); } } catch (InterruptedException e) { System.out.println("Interrupted"); } System.out.print("]"); } class Caller implements Runnable { String msg; Callme target; Thread t; public Caller (Callme targ, String s) { target= targ; msg=s; } t = new Thread(this); t.start()); public void run () { target.call(msg); } } class Synch { public static void main (String args[]) { Callme target= new Callme(); Caller obl= new Caller (target, "Hello"); Caller ob2 Caller ob3 try { obl..join(); ob2..join(); ob3..join(); }catch (InterruptedException e) { System.out.println("Interrupted"); } } new Caller (target, "Synchronized"); new Caller (target, "World"); }
Please DO NOT respond to this question by copy/pasting the code provided elsewhere on the site, none of those work. Thanks. Virtual Memory Lab This lab project addresses the implementation of page-replacement algorithms in a demand-paging system. Each process in a demand-paging system has a page table that contains a list of entries. For each logical page of the process, there is an entry in the table that indicates if the page is in memory. If the page is in memory, the memory frame number that page is resident in is indicated. Also, for each page, the time at which the page has arrived in memory, the time at which it has been last referenced, and the number of times the page has been referenced since the page arrived in memory are maintained. The page table data structure is a simple array of page-table entries (PTEs). Each PTE contains five fields as defined below: struct PTE { int is_valid; int frame_number; int arrival_timestamp; int…
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Complete the following code. The goal is to implement the producer-consumer problem. You are expected to extend the provided C code to synchronize the thread operations consumer() and producer() such that an underflow and overflow of the queue is prevented. You are not allowed to change the code for implementing the queue operations, that is the code between lines 25 and 126 as shown in the screenshot. You must complete the missing parts as shown in the screenshot as well as complete the missing codes of producer and consumer. #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <time.h> #include <pthread.h> #include <semaphore.h> #include <errno.h> #include <fcntl.h> #define MAX_LENGTH_CAP 100 #define INIT -127 #define UNDERFLOW (0x80 + 0x02) #define OVERFLOW 0x80 + 0x01 #define BADPTR (0x80 + 0x03) #define CONSUMER_TERMINATION_PROBABILITY 40 #define PRODUCER_TERMINATION_PROBABILITY 30 // ============= LOCKED…
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Complete the following code. The goal is to implement the producer-consumer problem. You are expected to extend the provided C code to synchronize the thread operations consumer() and producer() such that an underflow and overflow of the queue is prevented. You are not allowed to change the code for implementing the queue operations, that is the code between lines 25 and 126 as shown in the Figure below. You must complete the missing parts between lines 226-261 as shown in the screenshot.
Fill in the blanks:5. The ( 6 ) is used to implement mutual exclusion where it can be decremented by aprocess and incremented by another, but the value must either be 0 or 1.6. If deadlock prevention approach is used to deal with deadlocks in a system, the ( 7 )condition can be prevented using the direct method.7. Two threads may share the memory space, but they cannot share the same ( 8 )8. Consider round-robin (RR) scheduling algorithm is implemented with 2 seconds timeslice and it is now selecting a new process; if we have 3 blocked processes (A, B, and C),and A has been waiting the longest, then A would need to wait a period of ( 9 ) secondsto be selected.9. In real-time systems, if a task appears at random times, then it is considered ( 10 ).
Subject Name: Advanced Object-Oriented Programming 1. Complete the below given code (1) class NyThread Thread t: Runnable ( MyThread (String n, int pl t (2) (3) : / creates teh Thread t with nane n : // changen the priority to p Syster.out.printin ("Thread "+n+* created with priority "+p): t. (4) : // exexcute the thread t. I // The only abatarct aethed in Runnable public for (int 1=10: 1>=1: 1--) { Syaten.out.prántin ("Thread *t.getName ()+"\e i - "a) : (5) try { (6) :/ ma ke the Thead t eleep to 2 seconds } catch (Exception e) Syater.out.printin ("Exception in Child"): System.out.printin ("Thread "+t. getName ()+" 1s Exiting"): public statie void main (Stringt) arga) { MyThread t1, 12; ti - new MyThread ("R1", 7): t2 = new MyThread ("R1", 3): try ( :// 2 atatements to aake the Threads ti a v2 exit at same time (8) ) catoh (Exception e) ( Syster.out.printin("Exception in main"): System.out.printin ("Thread Main is Exiting"): 1. 2. 3. 4. 6. 7. 8. 5.
#SumCalculator Class: Create a class named SumCalculator that extends the Thread class. This class calculates the sum of numbers within a provided range. Declare three instance variables: start, end, and sum in the SumCalculator class . start and end are the lower and upper bounds of the range, respectively, while sum stores the sum of the numbers within the range. Create a constructor that takes in two parameters: start and end, and initializes the corresponding instance variables. The sum variable should be initialized to 0. Define the run method to calculate the sum of the numbers within the range. Inside of the run method use a for-loop to iterate over the numbers within the range and add each number to the sum variable. Define the accessor method getSum that returns the value of the sum variable. #Main Class: Create a class named Main that contains the main method, the entry point of the program. Create two objects of the SumCalculator class , with the first…

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