xixu-me/disk-scheduling
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Update script.js

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xixu-me committed 2024-11-27 10:36:21 +08:00
1 parent a18c5fd71c
commit d0b60ec7fe
1 file changed
+34 -34
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script.js
+34 -34
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@@ -9,7 +9,6 @@ function initialize() {
head = document.getElementById("head");
const diskTrack = document.getElementById("diskTrack");
const trackWidth = diskTrack.offsetWidth;
const headWidth = 12;
// Clear existing requests
const existingRequests = document.querySelectorAll(".request");
@@ -48,7 +47,6 @@ function startFCFS() {
reset();
const diskTrack = document.getElementById("diskTrack");
const trackWidth = diskTrack.offsetWidth;
const headWidth = 12;
const initialHead = parseInt(document.getElementById("initialHead").value);
let currentPosition = initialHead;
let currentRequestIndex = 0;
@@ -67,16 +65,17 @@ function startFCFS() {
head.style.left = targetPixel + "px";
const requestElements = document.querySelectorAll(".request");
requestElements.forEach((req) => {
const reqPos =
((parseFloat(req.style.left) - headWidth / 2) /
(trackWidth - headWidth)) *
199;
if (Math.abs(reqPos - targetPosition) < 1) {
req.classList.add("served");
}
});
setTimeout(() => {
const requestElements = document.querySelectorAll(".request");
requestElements.forEach((req) => {
const reqPos = Math.round(
(parseFloat(req.style.left) / trackWidth) * 199
);
if (reqPos === targetPosition) {
req.classList.add("served");
}
});
}, 400);
direction = currentPosition > targetPosition ? -1 : 1;
updateStats(targetPosition);
@@ -88,7 +87,6 @@ function startSSTF() {
reset();
const diskTrack = document.getElementById("diskTrack");
const trackWidth = diskTrack.offsetWidth;
const headWidth = 12;
const initialHead = parseInt(document.getElementById("initialHead").value);
let currentPosition = initialHead;
let remainingRequests = [...requests];
@@ -115,16 +113,17 @@ function startSSTF() {
head.style.left = targetPixel + "px";
const requests = document.querySelectorAll(".request");
requests.forEach((req) => {
const reqPos =
((parseFloat(req.style.left) - headWidth / 2) /
(trackWidth - headWidth)) *
199;
if (Math.abs(reqPos - closestRequest) < 1) {
req.classList.add("served");
}
});
setTimeout(() => {
const requests = document.querySelectorAll(".request");
requests.forEach((req) => {
const reqPos = Math.round(
(parseFloat(req.style.left) / trackWidth) * 199
);
if (reqPos === closestRequest) {
req.classList.add("served");
}
});
}, 400);
direction = currentPosition > closestRequest ? -1 : 1;
updateStats(closestRequest);
@@ -135,7 +134,6 @@ function startSCAN() {
reset();
const diskTrack = document.getElementById("diskTrack");
const trackWidth = diskTrack.offsetWidth;
const headWidth = 12;
const initialHead = parseInt(document.getElementById("initialHead").value);
const initialDirection = document.getElementById("scanDirection").value;
let currentPosition = initialHead;
@@ -176,16 +174,17 @@ function startSCAN() {
head.style.left = targetPixel + "px";
const requests = document.querySelectorAll(".request");
requests.forEach((req) => {
const reqPos =
((parseFloat(req.style.left) - headWidth / 2) /
(trackWidth - headWidth)) *
199;
if (Math.abs(reqPos - targetPosition) < 1) {
req.classList.add("served");
}
});
setTimeout(() => {
const requests = document.querySelectorAll(".request");
requests.forEach((req) => {
const reqPos = Math.round(
(parseFloat(req.style.left) / trackWidth) * 199
);
if (reqPos === targetPosition) {
req.classList.add("served");
}
});
}, 400);
updateStats(targetPosition);
currentRequestIndex++;
@@ -204,4 +203,5 @@ function markRequestAsServed(request) {
request.style.animation = "pulse 0.3s ease";
}
// Initialize on load
window.onload = initialize;