Kas on võimalik olukord, kus planeerija ei sunnita goroutine'i loobuma täitmisest?

In Go, the goroutine scheduler (scheduler) usually manages the switching between goroutines to ensure concurrent execution. However, there can be situations where a goroutine does not yield control if it performs a long synchronous operation without calling functions that can trigger a scheduler switch (such as system calls, I/O operations, or calling runtime.Gosched()).

This is because Go uses cooperative multitasking at the goroutine level: switching occurs at specific points, such as calls to blocking operations or runtime.Gosched(). If a goroutine runs an infinite loop without these points, it can «block» the scheduler, not passing control to other goroutines.

Example:

for {
    // if there are no calls here that can yield to the scheduler,
    // the goroutine may not yield execution to others
}

Therefore, it is recommended to insert calls to runtime.Gosched() or use channels/blocking operations to allow the scheduler to switch between goroutines.