Provide java.lang.Terminator.setup() via --install-exit-handlers

[olpaw]

This PR provides a fix for #1592

Testing with

public class Main {
    public static void main(String[] args) {
        Runtime.getRuntime().addShutdownHook(new Thread(() -> {
            System.out.println("Shutdown happens!");
        }));
        
        try {
            System.out.println("Zzzzzzz.....");
            Thread.sleep(Long.MAX_VALUE);
        } catch (InterruptedException e) {
            System.out.println("Good morning!");
            e.printStackTrace();
        }
    }
}

shows an image size increase of 48Kb when native-image --install-exit-handlers is used (from 6,802,048 bytes to 6,850,976 bytes)

[olpaw]

@pejovica reminded me that there is java.lang.Terminator. That is exactly what we should use here.

[olpaw]

Arrg calling the code from java.lang.Terminator.setup() does not work. Investigating ...

[pejovica]

You need to reset java.lang.Terminator.handler field, or you could reuse com.oracle.svm.enterprise.pgo.substitutions.Target_java_lang_Terminator isntead.

[olpaw]

Tested if this also works on Windows

C:\Users\pwoegere\OLabs\graal\substratevm>main.exe
Zzzzzzz.....
[CTRL-C]
Shutdown happens!

LGTM

[pejovica]

LGTM. Nicely done!