According to MDN, a web worker is typically spawned like this: if(window.Worker) { var alarmWorker = new Worker(‘./web-worker.js’); sendMessage(); }; Immediately upon creation, I would like to send the web worker a message, but it is not being received because of the narrow timing. This is why am wondering whether there is a way to ..
Category : spawn
is there any way to set timeout option at child_process spawn? Here is my code. But I think it doesn’t work…. When I remove this : , { timeout: 100 * 60 } , it works. const { spawn } = require(‘child_process’) function spawnPython() { const job2 = new CronJob({ cronTime: ’36 17 * * ..
I’m trying to call some ML calculation (exists in ‘main.py’ file) from my Node app. I spawned a child process to run ‘main.py’ function, and tried to get it’s answer by cp.stdout.on(…). I see that the code doesn’t get into this function (doesn’t print the line inside). I tried to call some simple python function ..
I want to call another shell script from javascript in a subprocess and pass values to its standard input in order. I wrote it as follows. const cp = require("child_process"); let counter = 0; function getResult(stdout) { return new Promise(resolve => { stdout.on(‘data’, data => { counter ++; console.log(counter); resolve(`success(${counter})`); }) }) } exports.handler = ..
I don’t understand why running the tcpdump program doesn’t work but with other commands and programs it does, for example: Ping, openSSL, … When I run it for example with Ping and OpenSSL, data appears in the console, but tcpdump does nothing, it just ends and that’s it. Somebody could help me? Thanks. const {spawn} ..
I’m having some issues with capturing the stdout stream from a command I’m running through nodes spawn. I’m writing a wrapper for dd (disk writing utility). According to the documentation and everything I’m reading online, I should in theory be able to capture the output from this command using: (assuming the variable dd is the ..
I am trying to write a simple node program that spawns a child process in a separate window (that can be viewed) and then, on program completion, prints the stderr messages. Currently testing on Windows. I made a parent.js file: const { spawnSync } = require(‘child_process’) const child = spawnSync(‘node child.js’, [], { shell: true, ..
I have a child process. The Questions is: Does the child process need to be killed manually? Will the child process continue to run even if my application is shut down? Will the child process automatically killed if the main application dies? Example import { spawn } from ‘child_process’ const backTaskProcess = spawn(process.execPath, [‘back-task.js’], { ..
I am having issues saving the results from a spawned python process. After converting data into json, I push the data to an array defined within the function before the spawn process is called, but the array keeps returning undefined. I can console.log and show the data correctly, but the array that is returned from ..
I want to run five spawn commands in parallel. I pass five hls stream urls to the loop, and these streamlink commands should record the video for 5 seconds and then kill those processes. I tried to do it async in several ways… but I don’t know how to wait those 5 seconds independently for ..
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