Aurelia,Electron:检测到可能的事件发射器内存泄漏

Aurelia,Electron:检测到可能的事件发射器内存泄漏,electron,aurelia,Electron,Aurelia,我正在使用electron和aurelia构建一个系统资源监视器作为一个项目 Main.js var ramInfo = {}; var result = await si.mem() ramInfo.total = parseInt(result.total / 1024 / 1024); ramInfo.used = parseInt(result.used / 1024 / 1024); ramInfo.percentUsed = parseInt((ramInfo.u

我正在使用electron和aurelia构建一个系统资源监视器作为一个项目

Main.js

  var ramInfo = {};
  var result = await si.mem()
  ramInfo.total = parseInt(result.total / 1024 / 1024);
  ramInfo.used = parseInt(result.used / 1024 / 1024);
  ramInfo.percentUsed = parseInt((ramInfo.used / ramInfo.total) * 100);
  ramInfo.percentAvailable = parseInt((ramInfo.percentUsed - 100) * -1);
  event.sender.send('ram-reply', ramInfo);
})
Overview.js:

  async attached () {
    await this.getRamInfo();
    this.startDataRefresh();

  }

  async getRamInfo () {
    window.ipc.send('ram');
     await window.ipc.on('ram-reply', (event, result) => {
        this.system.ram = result;
        //This line gets logged an additional time each time the setInterval function runs
        console.log(this.system.ram);
        this.ramData.series = [this.system.ram.percentAvailable, this.system.ram.percentUsed];
        new Chartist.Pie('.ram-chart', this.ramData , this.options);
      });
      console.log("Break");
    }

  startDataRefresh() {
    let scope = this;
    setInterval(function() {
      scope.getRamInfo();
    }, 3000);
  }
我在电子控制台中收到以下错误:

MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 ram-reply listeners added to [EventEmitter]. Use emitter.setMaxListeners() to increase limit
我认为getRamInfo()函数每三秒运行一次,但是,每次函数运行时,函数的console.log部分都会被额外记录一次。我相当肯定这就是问题所在,我只是不知道为什么它在每个间隔运行多次

编辑: 在将setInterval函数移到main.js中时,我已经找到了部分解决方案:

ipcMain.on('ram', async (event) => {
  setInterval(async function() {
    var ramInfo = {};
    var result = await si.mem()
    ramInfo.total = parseInt(result.total / 1024 / 1024);
    ramInfo.used = parseInt(result.used / 1024 / 1024);
    ramInfo.percentUsed = parseInt((ramInfo.used / ramInfo.total) * 100);
    ramInfo.percentAvailable = parseInt((ramInfo.percentUsed - 100) * -1);
    event.sender.send('ram-reply', ramInfo)
  }, 3000);
})
似乎每次原始setInterval调用ipcMain时,都会创建一个新的侦听器,每次侦听器都会返回结果。我希望它取决于打开的视图,因此最好通过视图进行控制。

尝试以下操作:

async getRamInfo () {
    window.ipc.send('ram');
    return new Promise(resolve => window.ipc.once('ram-reply', (event, result) => resolve(result));
}

async refresh() {
    const ramInfo = await this.getRamInfo();
    this.ramData.series = [this.system.ram.percentAvailable, this.system.ram.percentUsed];
    new Chartist.Pie('.ram-chart', this.ramData , this.options);
    // ...
}

startDataRefresh() {
    if(!this.interval) {
        this.interval = setInterval(() => this.refresh(), 3000);
    }
}

stopDataRefresh() {
    if(this.interval) {
        clearInterval(this.interval);
        delete this.interval;
    }
}
主要部分-
window.ipc.once('ram-reply'
)-使用
once
进行一次性事件订阅