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Electronic multi process solution interface Caton
2021-08-27 06:10:57 【Sword teacher_】
This article was first published on the official account 【 An old yard farmer 】
Because of the company's business needs , Recently participated in a company's desktop application . The technology stack is electron+react
, The interface part mainly uses antd
.
There is a problem in the development process : There is a very time-consuming task , When the task is on , It will cause the whole application interface to get stuck , The interface operation can only be performed after the task execution is completed . Let's talk about it today electron
Processing methods of intensive tasks in .
Caton's reason
because electron
The app uses js
As a development language , and js It's single threaded , therefore electron
There is no multithreading , But it allows multiple processes . stay electron
It is divided into main process and rendering process , The main process is in main
File control , At the same time, this file is also responsible for controlling the application life cycle .( notes :main
The file in package.json
In the configuration file main
Field ) Each window is a rendering process, which is what we call UI process . After research, we found that , The application interface is stuck because the task consumes more resources , This will cause the current rendering process to get stuck .
How to avoid UI Carton
About electron
Application performance optimization ,electron
The official document of gives the following suggestions : whenever Node.js Core module ( Such as fs) Provide a synchronous version or an asynchronous version , You should use asynchronous and non blocking variables
Avoid using synchronization whenever possible IPC
and remote
modular , Use remote
It's very easy to block the module unknowingly UI Threads
For long-term occupation CPU Heavy tasks , You can move them to BrowserWindow
, Generate a dedicated process .( That is, create a new window )
Specific solutions
Based on official documents , I used to create a new hidden BrowserWindow
The way , Put time-consuming tasks in a new window . Because of each BrowserWindow
Is a separate rendering process , Therefore, this method can avoid interface jamming . And task processing progress , Hidden rendering process ( After use " Task progress " Instead of ) Can pass IPC
The way of communication tells the main process , The main process then notifies the current rendering process . For convenience, you can also use... In the current rendering process remote.ipcMain.on()
To communicate with the task process .
The core code is as follows :
Listen during the current rendering process , Because there is no communication between the rendering process and the rendering process , So it can be used remote.ipcMain
Get the main process object to listen
// The current rendering process
import { remote } from 'electron'
import React, { useState, useEffect, useRef } from 'react'
const win = useRef()
useEffect(() => {
return () => {
closeArchiveRenderer()
}
}, [])
// Start task
function begain() {
listenIpcRenderer()
createNewWindow()
}
// Create hide window
function createNewWindow() {
let win.current = new remote.BrowserWindow({
width: 500,
height: 500,
show: false,
webPreferences: {
nodeIntegration: true,
contextIsolation: false,
enableRemoteModule: true,
},
})
win.current.loadURL('xxxxxx')
}
//ipc Communication monitoring
function listenIpcRenderer() {
remote.ipcMain.on('window-load-success', (event, arg) => {
console.log(arg)
if (arg) {
event.reply('begain-task', {
//tag Mark the task type
tag: 'xxx',
// Data passed to the task process
dataSource: dataSource
})
}
})
remote.ipcMain.on('change-task-status', (event, arg) => {
console.log(arg)
if (arg.error) {
console.log(arg.error)
return
}
if (arg.status === 2) {
// State processing
}
})
remote.ipcMain.on('task-complete', (event, arg) => {
// Task to complete
// Close the process , Remove monitor , It can be placed in a suitable place as needed
closeArchiveRenderer()
})
}
// Close the process at the right time , And remove the listener
function closeArchiveRenderer() {
if (win.current) {
win.current.close()
win.current = null
}
remote.ipcMain.removeAllListeners()
}
Copy code
This is required in task specific processes
// Task progress , The current window handles the hidden state
import { ipcRenderer } from 'electron'
useEffect(() => {
ipcRenderer.on('begain-task', (event, arg) => {
// according to tag Judge the type of task
if (arg.tag === 'xxxx') {
console.log(arg.dataSource)
// Task processing TODO
xxxx()
// The following code can be placed in the right place as needed
// If the processing state changes, send a change notification
ipcRenderer.send('change-task-status', data)
// If the task is done , Then send a completion notice
ipcRenderer.send('task-complete', data)
}
})
ipcRenderer.send('window-load-success', true)
return () => {
ipcRenderer.removeAllListeners()
}
}, [])
Copy code
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copyright notice
author[Sword teacher_],Please bring the original link to reprint, thank you.
https://en.qdmana.com/2021/08/20210827061054819j.html
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