Kuidas operatsioonisüsteemi planeerija juhib funktsiooni, mis teeb võrgu päringu?

In Go, the scheduler manages goroutines, which are lightweight threads. When a function makes a network request, it usually blocks on an input/output operation.

The Go scheduler uses non-blocking input/output and asynchronous system calls. When a goroutine waits for a response from the network, it is put into a waiting state and switches to executing other goroutines.

This allows efficient use of system resources and does not block the OS thread. After the network request completes, the scheduler resumes the execution of the goroutine.

Example:

func fetch(url string) {
    resp, err := http.Get(url) // network request
    if err != nil {
        log.Fatal(err)
    }
    defer resp.Body.Close()
    // process response
}

func main() {
    go fetch("http://example.com")
    // other goroutines run in parallel
}

This way, the Go scheduler efficiently manages goroutines, switching between them during blocking operations such as network requests.