HeliOS/docs/visualization.html at main · Thom-320/HeliOS · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>HeliOS Scheduler Visualization</title>
    <style>
      :root {
        --primary: #3b82f6;
        --secondary: #10b981;
        --bg: #0f172a;
        --card: #1e293b;
        --text: #f8fafc;
      }
      body {
        font-family: "Inter", system-ui, -apple-system, sans-serif;
        background-color: var(--bg);
        color: var(--text);
        margin: 0;
        padding: 2rem;
      }
      .container {
        max-width: 1200px;
        margin: 0 auto;
      }
      h1,
      h2 {
        text-align: center;
        margin-bottom: 2rem;
      }
      .controls {
        background: var(--card);
        padding: 1.5rem;
        border-radius: 1rem;
        margin-bottom: 2rem;
        display: flex;
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
        align-items: center;
      }
      button {
        background: var(--primary);
        color: white;
        border: none;
        padding: 0.75rem 1.5rem;
        border-radius: 0.5rem;
        cursor: pointer;
        font-weight: 600;
        transition: opacity 0.2s;
      }
      button:hover {
        opacity: 0.9;
      }
      button.secondary {
        background: var(--secondary);
      }
      .grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
      }
      .panel {
        background: var(--card);
        padding: 1.5rem;
        border-radius: 1rem;
      }
      .gantt-chart {
        display: flex;
        height: 60px;
        background: #334155;
        border-radius: 0.5rem;
        overflow: hidden;
        margin: 1rem 0;
        position: relative;
      }
      .block {
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.8rem;
        font-weight: bold;
        color: white;
        transition: width 0.3s ease;
      }
      .stats {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
        margin-top: 1rem;
        text-align: center;
      }
      .stat-box {
        background: rgba(255, 255, 255, 0.1);
        padding: 0.5rem;
        border-radius: 0.5rem;
      }
      .stat-value {
        font-size: 1.5rem;
        font-weight: bold;
      }
      .stat-label {
        font-size: 0.8rem;
        opacity: 0.7;
      }
      input[type="number"] {
        padding: 0.5rem;
        border-radius: 0.25rem;
        border: 1px solid #475569;
        background: #334155;
        color: white;
        width: 60px;
      }
    </style>
  </head>
  <body>
    <div class="container">
      <h1>HeliOS Scheduler Visualization</h1>

      <div class="controls">
        <div>
          <label>Task 1 Burst:</label>
          <input type="number" id="t1" value="10" min="1" max="50" />
        </div>
        <div>
          <label>Task 2 Burst:</label>
          <input type="number" id="t2" value="20" min="1" max="50" />
        </div>
        <div>
          <label>Task 3 Burst:</label>
          <input type="number" id="t3" value="15" min="1" max="50" />
        </div>
        <div>
          <label>Quantum (RR):</label>
          <input type="number" id="quantum" value="5" min="1" max="20" />
        </div>
        <button onclick="simulate()">Run Simulation</button>
      </div>

      <div class="grid">
        <div class="panel">
          <h2>Round Robin (Preemptive)</h2>
          <div id="rr-chart" class="gantt-chart"></div>
          <div class="stats">
            <div class="stat-box">
              <div class="stat-value" id="rr-wait">0</div>
              <div class="stat-label">Avg Wait Time</div>
            </div>
            <div class="stat-box">
              <div class="stat-value" id="rr-turn">0</div>
              <div class="stat-label">Avg Turnaround</div>
            </div>
            <div class="stat-box">
              <div class="stat-value" id="rr-switches">0</div>
              <div class="stat-label">Context Switches</div>
            </div>
          </div>
        </div>

        <div class="panel">
          <h2>Shortest Job First (Non-Preemptive)</h2>
          <div id="sjf-chart" class="gantt-chart"></div>
          <div class="stats">
            <div class="stat-box">
              <div class="stat-value" id="sjf-wait">0</div>
              <div class="stat-label">Avg Wait Time</div>
            </div>
            <div class="stat-box">
              <div class="stat-value" id="sjf-turn">0</div>
              <div class="stat-label">Avg Turnaround</div>
            </div>
            <div class="stat-box">
              <div class="stat-value" id="sjf-switches">0</div>
              <div class="stat-label">Context Switches</div>
            </div>
          </div>
        </div>
      </div>
    </div>

    <script>
      const colors = ["#ef4444", "#f59e0b", "#10b981", "#3b82f6", "#8b5cf6"];

      function simulate() {
        const tasks = [
          { id: 1, burst: parseInt(document.getElementById("t1").value) },
          { id: 2, burst: parseInt(document.getElementById("t2").value) },
          { id: 3, burst: parseInt(document.getElementById("t3").value) },
        ];
        const quantum = parseInt(document.getElementById("quantum").value);

        runRR(JSON.parse(JSON.stringify(tasks)), quantum);
        runSJF(JSON.parse(JSON.stringify(tasks)));
      }

      function runRR(tasks, quantum) {
        let time = 0;
        let queue = [...tasks];
        let timeline = [];
        let completed = [];
        let switches = 0;

        // Initialize state
        tasks.forEach((t) => {
          t.remaining = t.burst;
          t.arrival = 0;
          t.wait = 0;
        });

        let lastTask = -1;

        while (queue.length > 0) {
          let task = queue.shift();

          if (lastTask !== -1 && lastTask !== task.id) switches++;
          lastTask = task.id;

          let runTime = Math.min(task.remaining, quantum);
          timeline.push({ id: task.id, duration: runTime, start: time });

          time += runTime;
          task.remaining -= runTime;

          // Update wait time for others in queue
          queue.forEach((t) => (t.wait += runTime));

          if (task.remaining > 0) {
            queue.push(task);
          } else {
            task.finish = time;
            task.turnaround = task.finish - task.arrival;
            // Wait time calculation in RR is complex iteratively,
            // simpler: Turnaround - Burst
            task.waitTotal = task.turnaround - task.burst;
            completed.push(task);
          }
        }

        renderChart("rr-chart", timeline, time);
        updateStats("rr", completed, switches);
      }

      function runSJF(tasks) {
        let time = 0;
        let available = [...tasks];
        let timeline = [];
        let completed = [];
        let switches = 0;

        // Sort by burst time
        available.sort((a, b) => a.burst - b.burst);

        available.forEach((task, index) => {
          if (index > 0) switches++;

          timeline.push({ id: task.id, duration: task.burst, start: time });

          // Wait time is current time (since all arrive at 0)
          task.waitTotal = time;
          time += task.burst;
          task.turnaround = time;

          completed.push(task);
        });

        renderChart("sjf-chart", timeline, time);
        updateStats("sjf", completed, switches);
      }

      function renderChart(elementId, timeline, totalTime) {
        const container = document.getElementById(elementId);
        container.innerHTML = "";

        timeline.forEach((block) => {
          const div = document.createElement("div");
          div.className = "block";
          div.style.width = (block.duration / totalTime) * 100 + "%";
          div.style.backgroundColor = colors[(block.id - 1) % colors.length];
          div.textContent = `P${block.id}`;
          div.title = `P${block.id}: ${block.duration} ticks`;
          container.appendChild(div);
        });
      }

      function updateStats(prefix, tasks, switches) {
        const avgWait =
          tasks.reduce((acc, t) => acc + t.waitTotal, 0) / tasks.length;
        const avgTurn =
          tasks.reduce((acc, t) => acc + t.turnaround, 0) / tasks.length;

        document.getElementById(`${prefix}-wait`).textContent =
          avgWait.toFixed(1);
        document.getElementById(`${prefix}-turn`).textContent =
          avgTurn.toFixed(1);
        document.getElementById(`${prefix}-switches`).textContent = switches;
      }

      // Initial run
      simulate();
    </script>
  </body>
</html>