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script.js
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script.js
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function reset()
{
for(var i=1; i<=5; i++)
{
for(var j=1; j<=3; j++)
{
document.getElementById('a'+i+j).value = '';
document.getElementById('m'+i+j).value = '';
document.getElementById('n'+i+j).value = '';
}
document.getElementById('p'+i).value = '';
}
document.getElementById('av11').value = '';
document.getElementById('av12').value = '';
document.getElementById('av13').value = '';
document.getElementById('resourceA').value = '';
document.getElementById('resourceB').value = '';
document.getElementById('resourceC').value = '';
document.body.style.backgroundColor = "#ffffff";
}
function example()
{
sam = [[0,1,0],
[2,0,0],
[3,0,2],
[2,1,1],
[0,0,2]];
max = [[7,5,3],
[3,2,2],
[9,0,2],
[2,2,2],
[4,3,3]];
for(var i=1; i<=5; i++)
{
for(var j=1; j<=3; j++)
{
document.getElementById('a'+i+j).value = sam[i-1][j-1];
document.getElementById('m'+i+j).value = max[i-1][j-1];
}
}
document.getElementById('resourceA').value = 10;
document.getElementById('resourceB').value = 5;
document.getElementById('resourceC').value = 7;
}
function find_avai()
{
var a = document.getElementById('resourceA').value;
var b = document.getElementById('resourceB').value;
var c = document.getElementById('resourceC').value;
var x = 0;
var y = 0;
var z = 0;
for(var i=1; i<=5; i++)
{
var x = x + parseInt(document.getElementById('a'+i+'1').value);
var y = y + parseInt(document.getElementById('a'+i+'2').value);
var z = z + parseInt(document.getElementById('a'+i+'3').value);
}
document.getElementById('av11').value = a-x;
document.getElementById('av12').value = b-y;
document.getElementById('av13').value = c-z;
}
function find_need()
{
for(var i=1; i<=5; i++)
{
for(var j=1; j<=3; j++)
{
document.getElementById('n'+i+j).value = parseInt(document.getElementById('m'+i+j).value) - parseInt(document.getElementById('a'+i+j).value);
}
}
}
function run_algo() {
var resourceA = parseInt(document.getElementById('resourceA').value);
var resourceB = parseInt(document.getElementById('resourceB').value);
var resourceC = parseInt(document.getElementById('resourceC').value);
find_avai();
find_need();
var k = 1; // AVAILABLE
var q = 1; // PROCESS
for (var j = 1; j <= 5; j++) {
x1 = parseInt(document.getElementById('av11').value);
x2 = parseInt(document.getElementById('av12').value);
x3 = parseInt(document.getElementById('av13').value);
for (var i = k; i <= 5; i++) {
var ex1 = parseInt(document.getElementById('a' + i + '1').value);
var ex2 = parseInt(document.getElementById('a' + i + '2').value);
var ex3 = parseInt(document.getElementById('a' + i + '3').value);
if (ex1 != 0 || ex2 != 0 || ex3 != 0) {
if (
x1 >= parseInt(document.getElementById('n' + i + '1').value) &&
x2 >= parseInt(document.getElementById('n' + i + '2').value) &&
x3 >= parseInt(document.getElementById('n' + i + '3').value)
) {
document.getElementById('p' + q).value = 'P' + i;
document.getElementById('av11').value =
parseInt(document.getElementById('av11').value) +
parseInt(document.getElementById('a' + i + '1').value);
document.getElementById('av12').value =
parseInt(document.getElementById('av12').value) +
parseInt(document.getElementById('a' + i + '2').value);
document.getElementById('av13').value =
parseInt(document.getElementById('av13').value) +
parseInt(document.getElementById('a' + i + '3').value);
document.getElementById('a' + i + '1').value = '0';
document.getElementById('a' + i + '2').value = '0';
document.getElementById('a' + i + '3').value = '0';
k = i + 1;
if (k == 6) {
k = 1;
}
q = q + 1;
break;
}
}
}
}
if (q != 6) {
// document.body.style.backgroundColor = 'red';
alert("Deadlock!!");
} else {
// document.body.style.backgroundColor = 'green';
alert("Safe!!");
}
}
function req_res()
{
var processId = prompt("Enter Process ID (1-5):");
var requestA = parseInt(prompt("Enter requested amount of Resource A for Process P" + processId + ":"));
var requestB = parseInt(prompt("Enter requested amount of Resource B for Process P" + processId + ":"));
var requestC = parseInt(prompt("Enter requested amount of Resource C for Process P" + processId + ":"));
var availableA = parseInt(document.getElementById('av11').value);
var availableB = parseInt(document.getElementById('av12').value);
var availableC = parseInt(document.getElementById('av13').value);
var allocationMatrix = [
[],
[0, parseInt(document.getElementById('a11').value), parseInt(document.getElementById('a12').value), parseInt(document.getElementById('a13').value)],
[0, parseInt(document.getElementById('a21').value), parseInt(document.getElementById('a22').value), parseInt(document.getElementById('a23').value)],
[0, parseInt(document.getElementById('a31').value), parseInt(document.getElementById('a32').value), parseInt(document.getElementById('a33').value)],
[0, parseInt(document.getElementById('a41').value), parseInt(document.getElementById('a42').value), parseInt(document.getElementById('a43').value)],
[0, parseInt(document.getElementById('a51').value), parseInt(document.getElementById('a52').value), parseInt(document.getElementById('a53').value)]
];
var maxMatrix = [
[],
[0, parseInt(document.getElementById('m11').value), parseInt(document.getElementById('m12').value), parseInt(document.getElementById('m13').value)],
[0, parseInt(document.getElementById('m21').value), parseInt(document.getElementById('m22').value), parseInt(document.getElementById('m23').value)],
[0, parseInt(document.getElementById('m31').value), parseInt(document.getElementById('m32').value), parseInt(document.getElementById('m33').value)],
[0, parseInt(document.getElementById('m41').value), parseInt(document.getElementById('m42').value), parseInt(document.getElementById('m43').value)],
[0, parseInt(document.getElementById('m51').value), parseInt(document.getElementById('m52').value), parseInt(document.getElementById('m53').value)]
];
if (requestA > maxMatrix[processId][1] || requestB > maxMatrix[processId][2] || requestC > maxMatrix[processId][3]) {
alert("Requested resources exceed the maximum claim of Process P" + processId + ".");
return;
}
if (requestA > availableA || requestB > availableB || requestC > availableC) {
alert("Insufficient available resources. Process P" + processId + " must wait.");
return;
}
availableA -= requestA;
availableB -= requestB;
availableC -= requestC;
allocationMatrix[processId][1] += requestA;
allocationMatrix[processId][2] += requestB;
allocationMatrix[processId][3] += requestC;
document.getElementById('av11').value = availableA;
document.getElementById('av12').value = availableB;
document.getElementById('av13').value = availableC;
document.getElementById('a' + processId + '1').value = allocationMatrix[processId][1];
document.getElementById('a' + processId + '2').value = allocationMatrix[processId][2];
document.getElementById('a' + processId + '3').value = allocationMatrix[processId][3];
alert("Resources allocated successfully for Process P" + processId + ".");
}