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darwin-mem-stat

v1.0.0

Published

Darwin memory usage utility (MAS-safe)

Downloads

3

Readme

darwinMemStat

一个用于获取 macOS Darwin 系统内存使用情况的 Node.js 模块,支持 MAS (Mac App Store) 安全。

特性

  • 🍎 原生 macOS Darwin API 支持
  • 🔄 跨平台兼容(fallback 到 Node.js os 模块)
  • 📦 MAS 安全(Mac App Store 兼容)
  • ⚡ 高性能原生实现
  • 📊 详细的内存统计信息

安装

npm install darwinMemStat

使用方法

基本使用

import { getSystemMemoryUsage } from 'darwinMemStat';

const memoryInfo = getSystemMemoryUsage();
console.log(memoryInfo);
// 输出示例:
// {
//   total: 17179869184,        // 总内存 (字节)
//   free: 92815360,           // 可用内存 (字节)
//   used: 17087053824,        // 已使用内存 (字节)
//   usedPercent: 0.994597     // 内存使用率 (0-1)
// }

格式化显示

import { getSystemMemoryUsage } from 'darwinMemStat';

function formatBytes(bytes: number): string {
    const sizes = ['B', 'KB', 'MB', 'GB', 'TB'];
    if (bytes === 0) return '0 B';
    const i = Math.floor(Math.log(bytes) / Math.log(1024));
    return Math.round(bytes / Math.pow(1024, i) * 100) / 100 + ' ' + sizes[i];
}

const memoryInfo = getSystemMemoryUsage();
console.log(`总内存: ${formatBytes(memoryInfo.total)}`);
console.log(`可用内存: ${formatBytes(memoryInfo.free)}`);
console.log(`已使用内存: ${formatBytes(memoryInfo.used)}`);
console.log(`内存使用率: ${(memoryInfo.usedPercent * 100).toFixed(2)}%`);

实时监控

import { getSystemMemoryUsage } from 'darwinMemStat';

// 监控内存变化
const interval = setInterval(() => {
    const memoryInfo = getSystemMemoryUsage();
    const timestamp = new Date().toLocaleTimeString();
    console.log(`[${timestamp}] 使用率: ${(memoryInfo.usedPercent * 100).toFixed(2)}%`);
}, 1000);

// 停止监控
setTimeout(() => {
    clearInterval(interval);
    console.log('监控结束');
}, 10000);

API

getSystemMemoryUsage()

返回系统内存使用情况的对象。

返回值:

  • total: number - 总内存大小(字节)
  • free: number - 可用内存大小(字节)
  • used: number - 已使用内存大小(字节)
  • usedPercent: number - 内存使用率(0-1之间的浮点数)

实现细节

  • macOS: 使用原生 Darwin API (mach/mach.h) 获取精确的内存统计
  • 其他平台: 回退到 Node.js 内置的 os 模块
  • 自动检测: 优先使用原生实现,失败时自动回退到 JS 实现

开发

# 安装依赖
npm install

# 构建项目
npm run build

# 运行测试
npm test

许可证

MIT