CODEWITHSUNDEEP
electronchild-processspawn
Lordran
Lordran

Reputation: 683

Spawn a process in electron

I have seen some posts about the topic,yes,it run very well when I used electron command in console.But it couldn't work when I packaged(electron-builder) the electron app,and appeared a problem when I started the app: it was starting create new process constantly,therefore there were a lot of processes in task manager we can see and CPU usage came to 100%. I don't know how dose this happened, could you help me? please! Here is my test code:

master.js(main): 

var childProcess = require('child_process');
let createProc = () => {
  let sp = childProcess.spawn(process.execPath, ['./go.js'], {stdio:'ignore'});
  sp.unref();
  sp.on('error', (err) => {
    console.log('failed to start process',err);
  });
  sp.on('exit',(code, signal) => {
    console.log(`child process exited with code ${code}`);
    createProc();
  });
}

createProc();

go.js:

const {app, BrowserWindow} = require('electron');
let basicWindowParams = {
  show: true,
  autoHideMenuBar:true
};
console.log(process.execPath)
console.log(process.execArgv)
console.log(process.pid)
app.on('ready', () => {
  let win = new BrowserWindow(basicWindowParams);
  win.loadURL('http://www.reddit.com/');
  win.on('did-finish-load', () => {
    win.show();
  });
});

OS： Windows 10

Electron: 1.8.1

Update: I have created a repo for demonstration: https://github.com/xzycn/el_test

Upvotes: 3

Views: 4379

Answers (1)

Kirill Husiatyn
Kirill Husiatyn

Reputation: 828

In the main electron file you can use something like this:

let serverProc = require('child_process').fork(
  require.resolve('./server.js'),
  ['--key', 'value'], // pass to process.argv into child
  {
    // options
  }
)
serverProc.on('exit', (code, sig) => {
  // finishing
})
serverProc.on('error', (error) => {
  // error handling
})

Upvotes: 0

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