Data Dependency Hazard (RAW, WAR, WAW) JAVA CODE

The Data dependency hazards are of 4 types.

1.RAR :Read After Read (This is not harmful as only read operations are performed.)

2.RAW :Read After Write(This may create problems and needs to be handled.)

3.WAR :Write After Read(A naming conflict. Not hazardous if sequential execution takes place)

4.WAW : Write After Write(A naming conflict. Not hazardous if sequential execution takes place)

//Aim:To check Data Dependency Hazards in Instructions using JAVA. import java.util.*; class hazard { static void accept() { Scanner scr=new Scanner(System.in); System.out.print("\nFirst Instruction:\nOpcode "); s[0][0]=scr.nextLine(); System.out.print("\nDomain: "); s[0][2]=scr.nextLine(); System.out.print("\nRange: "); s[0][1]=scr.nextLine(); System.out.print("\nSecond Instruction:\nOpcode "); s[1][0]=scr.nextLine(); System.out.print("\nDomain: "); s[1][2]=scr.nextLine(); System.out.print("\nRange: "); s[1][1]=scr.nextLine(); } static int check() { if(s[0][1].equals(s[1][2])) return 1; else if(s[0][2].equals(s[1][1])) return 2; else if(s[0][1].equals(s[1][1])) return 3; else return 0; } static String s[][]=new String[2][3]; public static void main(String args[]) { Scanner scr=new Scanner(System.in); int ch=0; do { int c=0; accept(); /*Display Instructions*/ System.out.println(s[0][0]+" "+s[0][1]+" "+s[0][2]); System.out.println(s[1][0]+" "+s[1][1]+" "+s[1][2]); c=check(); if(c==1) System.out.println("RAW hazard exists"); else if(c==2) System.out.println("WAR hazard exists"); else if(c==3) System.out.println("WAW hazard exists"); else System.out.println("There are No Data Dependency Hazards"); System.out.println("Do you wish to continue?(1/0)"); ch=scr.nextInt(); } while(ch==1); } } /*OUTPUT C:\Users\Aditya\Desktop\aditya>java hazard First Instruction: Opcode LOAD Domain: a Range: r1 Second Instruction: Opcode ADD Domain: r1 Range: r2 LOAD r1 a ADD r2 r1 RAW hazard exists Do you wish to continue?(1/0) 1 First Instruction: Opcode MUL Domain: r2 Range: r1 Second Instruction: Opcode ADD Domain: r3 Range: r2 MUL r1 r2 ADD r2 r3 WAR hazard exists Do you wish to continue?(1/0) 1 First Instruction: Opcode MUL Domain: r2 Range: r1 Second Instruction: Opcode ADD Domain: r4 Range: r1 MUL r1 r2 ADD r1 r4 WAW hazard exists Do you wish to continue?(1/0) 1 First Instruction: Opcode ADD Domain: r1 Range: r2 Second Instruction: Opcode MUL Domain: r3 Range: r4 ADD r2 r1 MUL r4 r3 There are No Data Dependency Hazards Do you wish to continue?(1/0) 0 */

VIEW OUR SPECIAL PAGE FOR SEM 7 STUDENTS -  sem 6 java codes