Re: AspectJ: how i get to know, who executed 'thisJoinPoint'?

=?ISO-8859-1?Q?Arne_Vajh=F8j?= <>
Tue, 09 Jan 2007 19:46:31 -0500
<45a43762$0$49196$> wrote:

i want to write a multi-thread tracing library.
so it is possible that different methods execute one same method
as a thread simultaneously. something like:

methodA-instance1 calls methodB-instance1
methodA-instance2 calls methodB-instance2 and methodB-instance3

because of that, i need to know, what joinpoint has
executed/called 'thisJoinPoint'. note, it's not enough
for me just to know the method, because, again, there may be
many simultaneous threads of that calling method.

For inspiration see code below.



aspect LogEnterAndLeave {
     pointcut alltrace() : call(* *.*(..)) && !within(LogEnterAndLeave)
&& !within(Locator) && !call(* Locator.*(..));
     before() : alltrace() {
     after() : alltrace() {

import java.util.HashMap;
import java.util.Stack;

public class Locator {
     private static HashMap data = new HashMap();
     public static void enter(String name) {
         String id = Thread.currentThread().getName();
         Stack stk = (Stack)data.get(id);
         if(stk == null) {
             stk = new Stack();
             data.put(id, stk);
     public static void leave() {
         String id = Thread.currentThread().getName();
         Stack stk = (Stack)data.get(id);
     public static String current() {
         String id = Thread.currentThread().getName();
         Stack stk = (Stack)data.get(id);
         return (String)stk.peek();
     public static String previous() {
         String id = Thread.currentThread().getName();
         Stack stk = (Stack)data.get(id);
         if(stk.size() > 1) {
             return (String)stk.get(stk.size() - 2);
         } else {
             return "void main(String[])";

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