What events and signals can be used to interact with goroutines in the Go language?

In the Go language, the following main mechanisms are used for interaction with goroutines:

1. Channels — the primary way to transmit data and signals between goroutines. Through channels, you can send and receive values, which allows synchronization.

ch := make(chan int)
go func() {
    ch <- 42 // send value
}()
val := <-ch // receive value

2. Context (context.Context) — used to manage the lifetime of goroutines, cancel operations, and pass cancellation signals.

ctx, cancel := context.WithCancel(context.Background())
go func(ctx context.Context) {
    select {
    case <-ctx.Done():
        // handle cancellation
    }
}(ctx)
cancel() // cancellation signal

3. sync.WaitGroup — for waiting for a group of goroutines to finish.

4. OS signals — through the os/signal package, system signals can be caught and passed to goroutines for proper termination.

Thus, the main "events" for interaction are send/receive operations on channels, cancellation via context, and system signals.