Memory leak detector

memory-leak-detector

Detect memory leaks in desktop applications through heap snapshot analysis, object tracking, and growth pattern detection.

Capabilities

• Capture and compare heap snapshots
• Track object allocation growth
• Identify retained objects
• Detect common leak patterns
• Generate leak reports
• Suggest fixes

Input Schema

{
  "type": "object",
  "properties": {
    "projectPath": { "type": "string" },
    "framework": { "enum": ["electron", "native", "qt"] },
    "duration": { "type": "number", "default": 60 }
  },
  "required": ["projectPath"]
}

Detection Approach

// Heap snapshot comparison
const v8 = require('v8');

function detectLeaks(iterations = 3, intervalMs = 10000) {
  const snapshots = [];

  const interval = setInterval(() => {
    global.gc(); // Requires --expose-gc
    const snapshot = v8.getHeapStatistics();
    snapshots.push(snapshot);

    if (snapshots.length >= iterations) {
      clearInterval(interval);
      analyzeGrowth(snapshots);
    }
  }, intervalMs);
}

function analyzeGrowth(snapshots) {
  const growth = snapshots[snapshots.length - 1].used_heap_size -
                 snapshots[0].used_heap_size;
  console.log(`Heap growth: ${growth / 1024 / 1024} MB`);
}

Common Leak Patterns

1. Event listeners not removed
2. Closures holding references
3. Global variable accumulation
4. Timer/interval not cleared
5. DOM node detachment

Related Skills

• electron-memory-profiler
• startup-time-profiler