Pass arguents to worker

Hi! 😃

I need to pass simple arguments to a worker. Somewhat like that:

max = 42;

var w = new Worker(function () {
    for (var i = 0; i < max; i++) {
        // Do something...
    }
}

max is in a different context than what is accessible from within the worker. How can I pass its value (or alternatively, the main context) to the worker?

The only way I would see is to use w.postMessage(max) after creating w, and have the thread inside of w block until it receives this first message. But that seems rather inelegant.

[BlessYAHU]

You’re right. That doesn’t work with workers. You will probably need to pass in the argument with a post message (I verified this worked by running it):

var Worker = require("tiny-worker");

var x = 3;
var fun = function (max) {
    let a = max;
    let maxi = a;
    for (var i = 0; i < maxi; i++) {
        console.log(i)
    }
};

var w = new Worker(function() {
    self.onmessage = function (ev) {
        postMessage(ev.data);
    }
});

w.onmessage = function(ev) {
    fun(ev.data);
    w.terminate();
}

w.postMessage(x);

[avoidwork]

feel free to start a new issue, someone might be able to help.