How to set and manage Goroutine priorities using runtime.Goexit() and runtime.Gosched()?

In Go, goroutines are lightweight threads that are scheduled by the Go runtime. By default, all goroutines have equal priority, and the Go scheduler decides the order of their execution. However, you cannot explicitly set or manage goroutine priorities using runtime.Goexit() or runtime.Gosched().

But, you can influence the execution order of goroutines using channels and synchronization primitives. Here's an example:

Define a channel to control the execution order:

var scheduler = make(chan bool)

Spawn goroutines with different priorities:

go func() {
    // High priority goroutine
    // Do some work
    scheduler <- true
}()

go func() {
    // Low priority goroutine
    // Do some work
    scheduler <- true
}()

Use the channel scheduler to enforce the execution order:

<-scheduler // Wait for the high-priority goroutine to complete
// Perform some intermediate operations if needed
<-scheduler // Wait for the low-priority goroutine to complete

By using this approach, you can ensure that a high-priority goroutine completes its work before a low-priority goroutine gets a chance to execute.

Note that runtime.Goexit() is used to exit the current goroutine, and runtime.Gosched() is used to yield the processor, allowing other goroutines to run. These functions are not designed to manage goroutine priorities.