What ways of switching goroutines do you know? How to switch a goroutine manually?

In Go, switching between goroutines is handled automatically by the runtime scheduler, which allocates CPU time among them. The main ways to switch goroutines are:

• Blocking operations: when waiting on a channel, mutex, timer, etc., the goroutine blocks, and the scheduler switches to another.
• Calling runtime.Gosched(): this is an explicit way to yield the processor, causing the current goroutine to pause and allow others to run.

Example of manual switching:

import "runtime"

func worker() {
    for i := 0; i < 10; i++ {
        // some work
        runtime.Gosched() // yield to the scheduler
    }
}

Thus, runtime.Gosched() is a tool for manual goroutine switching, useful for improving responsiveness or preventing a single goroutine from monopolizing the CPU.