go - How to have constant number of worker functions executing at all times?

Question

This question already has answers here: question from:https://stackoverflow.com/questions/65835509/how-to-have-constant-number-of-worker-functions-executing-at-all-times

Answer 1

You were getting there.

func worker(ch chan func()) {
    // worker needs to read from a channel until channel is closed, 
    // then it will stop
    for work := range ch {
        work()
    }
}

func main() {
    workers := 2
    workerChan := make(chan func(), 10)

    for i := 0; i < workers; i++ {
        // start workers
        worker(workerChan)
    }
    
    // add work to channel
    workerChan <- func() {
        // do work
    }
}

If you wrap it in a struct, you can make a very general worker pool with it, executing whatever you give to it.