Consider the following critical-section protocol, and then answer the questions next:int flag [2] = {2,2}; |/ flag[i] =0 or 1 or 2.int turn=0;1. flag[i] = 1;2. While(flag[j]==1) {flag[i] = 0;3.4.while (turn! = i && flag[j]! = 2)%3D5.6. }7. turn = i;8. // critical section//9. // Exit Protocol10. turn = j;11. flag[i] = 2;Q1) Does this code satisfy progress? Show why?Q2) Does this code satisfy BW? Show why?

1. Code satisfying progress or not: Consider a set of processes (P1, P2, P3,...... Pn) that shares…

Consider the following critical-section protocol, and then answer the questions next: int flag [2] = {2,2}; |/ flag[i] =0 or 1 or 2. int turn=0; 1. flag[i] = 1; 2. While(flag[j]==1) { flag[i] = 0; 3. 4. while (turn! = i && flag[j]! = 2) 5. 6. } 7. turn = i; 8. |/ critical section// 9. |/ Exit Protocol 10. turn = j; 11. flag[i] = 2; Q1) Does this code satisfy progress? Show why? Q2) Does this code satisfy BW? Show why?

Consider the following critical-section protocol, and then answer the questions next: int flag [2] = {2,2}; |/ flag[i] =0 or 1 or 2. int turn=0; 1. flag[i] = 1; 2. While(flag[j]==1) { flag[i] = 0; 3. 4. while (turn! = i && flag[j]! = 2) 5. 6. } 7. turn = i; 8. |/ critical section// 9. |/ Exit Protocol 10. turn = j; 11. flag[i] = 2; Q1) Does this code satisfy progress? Show why? Q2) Does this code satisfy BW? Show why?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

Question 2. package sortsearchassigncodeex1; import java.util.Scanner; import java.io.*; // // public class Sortsearchassigncodeex1 { // public static void fillArray(Scanner inputFile, int[] arrIn){ int indx = 0; //Complete code { arrIn[indx] = inputFile.nextInt(); indx++; } }
function result = result = ''; 1 tokens_to_str_code(token_mat, time_unit) 3 for i =1:size(token_mat,1) 4 5 if(token_mat (i,1) if(token_mat(i,2) > 4*time_unit) result = strcat(result,"-"); elseif((token_mat(i,2) > time_unit) && (token_mat(i,2) 8*time_unit) result = strcat(result,"/"); elseif((token_mat(i,2) 11 == 0) 12 13 14 4*time_unit) && (token_mat(i,2) < 8*time_unit)) 15 result strcat(result," "); %3D 16 end 17 end 18 end 19 end 20 21 Check Test Expected Got tokens %3D [1 4; е 3; 1 3; е 1; 1 3; е 1; 1 1; ө 1; 1 1 ]; time_unit = .5; disp( tokens_to_str_code( tokens, time_unit )) tokens = [ 0 4; 1 1457; 0 463; 1 1457; 0 463; 1 497; 0 1423; 1 1457; ---/..--.. --.---/..--.. о 463; 1 1457; 0 463; 1 1457; ө 3343; 1 497; ө 463; 1 497; 0 463; 1 1457; 0 1423; 1 1457; 0 463; 1 497; 0 463; 1 497; e 379 ]; time_unit = 240; disp( tokens_to_str_code( tokens, time_unit ))
In C++, finish the Robot Paths code. Here is the starter code: int paths(int i, int j) { static int p[5][5] = {0}; if (i == 0 || j == 0) return 1; if (p[i][j] != 0) return p[i][j]; return paths(i, j-1) + paths(i-1, j);}
public static void main(String[] args) { int a; int b; int c; c = quad(0,1, 2); b = quad(1, 2, 3); a = quad(5, 6, 7); c = c +b+ a; } private static int quad(int a, int b, int c) { int r; r= a +b+ c; return r; } For the code above, how many entries does the activation record for method quad have? During the execution of main, at most how many activation records are existent on the run-time stack?
bool validPassword=true; cin >> passPhrase;} if (passPhrase.length() <= 4) { validPassword = false; } else { int digitCount=0; for (int i = 0; i < passPhrase.length(); i++) { if (isdigit(passPhrase.at(i))) digitCount++; } if (digitCount > 4) { validPassword=false; } if (validPassword) { cout << "Valid" << endl; } else { cout << "Invalid" << endl; } return 0;} // it still comes up with these errors. Not sure what it is telling me. main.cpp:9:7: error: expected unqualified-id before ‘if’ 9 | if (passPhrase.length() <= 4) { | ^~ main.cpp:13:7: error: expected unqualified-id before ‘else’ 13 | else { | ^~~~
import java.util.Scanner; public class LabProgram { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); String[] names = { "Ryley", "Edan", "Reagan", "Henry", "Caius", "Jane", "Guto", "Sonya", "Tyrese", "Johnny" }; int index; index = scnr.nextInt(); /* Type your code here. */ }}
import java.util.Scanner; public class TriangleArea { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); Triangle triangle1 = new Triangle(); Triangle triangle2 = new Triangle(); // TODO: Read and set base and height for triangle1 (use setBase() and setHeight()) // TODO: Read and set base and height for triangle2 (use setBase() and setHeight()) System.out.println("Triangle with smaller area:"); // TODO: Determine smaller triangle (use getArea()) // and output smaller triangle's info (use printInfo()) }} public class Triangle { private double base; private double height; public void setBase(double userBase){ base = userBase; } public void setHeight(double userHeight) { height = userHeight; } public double getArea() { double area = 0.5 * base * height; return area; } public void printInfo() { System.out.printf("Base:…
Consider the following function: public void bSearch(int[] A, int value, int start, int end) { if (end value) { return bSearch(A, value, start, mid); } else if (value > A[mid]) { return bSearch(A, value, mid+1, end); } else { return mid; } } The mutation program P' changes the part as shown below. } else if (value > A[mid]) { return bSearch(A, value, mid+2, end); } else { return mid; } A test input is given t1: {A = [2, 3, 5, 7, 10, 11], value = 6, start=0, end=5}. Which statement below best describes the mutant with regards to the test input? O a. t1 resolves mutant P O b. The mutant P' with regards to test input t1 is live.
import java.util.Scanner; public class CharMatch { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); String userString; char charToFind; int strIndex; userString = scnr.nextLine(); charToFind = scnr.next().charAt(0); strIndex = scnr.nextInt(); /* Your code goes here */ }}
public int getPowerUse(){ return super.getPowerUse() + contents * powerRating; //////////////////////////////////////////////// if (args[0].equals("REFRIGERATOR")) { String manufacturer = args[1]; String serialNo = args[2]; int basePower = Integer.parseInt(args[3]); int powerRating =Integer.parseInt(args[4]); int capacity = Integer.parseInt(args[5]);     Refrigerator rf=new Refrigerator(manufacturer,serialNo, basePower, powerRating, capacity); things[rf.getId()]=rf;   returnval = rf.getId(); }
In C++ class rectangleType { public:     void setLengthWidth(double x, double y); //Sets the length = x; width = y;     void print() const; //Output length and width     double area(); //Calculate and return the area of the rectangle (length*width)     double perimeter(); //Calculate and return the perimeter (length of outside boundary of the rectangle) private:     double length;     double width; }; Set the length of the rectangle to 24 and the width to 30.
In C++ class rectangleType { public:     void setLengthWidth(double x, double y); //Sets the length = x; width = y;     void print() const; //Output length and width     double area(); //Calculate and return the area of the rectangle (length*width)     double perimeter(); //Calculate and return the perimeter (length of outside boundary of the rectangle) private:     double length;     double width; }; Declare an instance of rectangleType.