The Go programming language does not provide direct access to the Goroutine ID (GID) of the currently executing Goroutine. The runtime package's Getgoroutine() function does not return a Goroutine ID, but rather a numeric identifier that can be used to distinguish Goroutines from one another.
Here is an example using runtime.Getgoroutine() to obtain the identifier of the current Goroutine:
package main
import (
"fmt"
"runtime"
)
func printGoroutineID() {
fmt.Printf("Goroutine ID: %d\n", runtime.Getgoroutine())
}
func main() {
printGoroutineID()
}
Keep in mind that Goroutine IDs are not stable and can be reused. They are often used for debugging or logging purposes, but should not be relied upon for any critical functionality or assumptions in your code.