AW: [cdt-debug-dev] getting current debug session

["Ploett, Norbert" <norbert.ploett@xxxxxxxxxxx>]

Hi,

I did this a while ago for a custom made view to see the content of the
mailboxes on my target system. I started with a new plug-in which
implemented a view (this is something that the new project wizard can
generate for you out of the box). Then I took the following steps:

Step 1) Register for debug events when the view was created:

	
org.eclipse.debug.core.DebugPlugin.getDefault().addDebugEventListener(ha
ndler);

where handler is a class you implement yourself.

Step 2) Evaluate debug events in your handler class

	public void handleDebugEvents(DebugEvent[] events) {
		for (int i = 0; i < events.length; i++) {
			DebugEvent event = events[i];
			Object eventSource = event.getSource();
			if (eventSource instanceof CDebugTarget) {
				CDebugTarget debugTarget =
(CDebugTarget) eventSource;
				handleCDebugTarget(debugTarget);
				if (event.getKind()==event.SUSPEND)  {
					handleCDebugTargetSuspend();
				}
			}
		}
	}

If the event comes from a CDebugTarget then it is from a CDT debug
session. The above snippet contains two further function calls:
handleCDebugTarget() and handleCDebugTargetSuspend():

Step 3) Get the debug session from the CDebugTarget:

	private CDebugTarget target ;
	private MISession session ;

	private void handleCDebugTarget(CDebugTarget debugTarget)  {
	
			target = debugTarget ;
			ICDISession cdiSession =
debugTarget.getCDISession();
			ICDITarget[] targets = cdiSession.getTargets();
			
			ICDITarget cdiTarget = null ;
			for (int i = 0; i < targets.length; i++) {
				ICDITarget cdiTargetCandidate =
targets[i];
				if (cdiTargetCandidate instanceof
Target)  {
					cdiTarget = cdiTargetCandidate ;
					break ;
				}
			}
			if (cdiTarget!=null) {
				Target miTarget = (Target) cdiTarget;
				session = miTarget.getMISession();
				
				observer = new MISessionObserver();
				session.addObserver(observer);
				
			}
		}
	}

Step 4) Send some commands to the session when the session suspends e.g.
to refresh your view (here it is the info signals command):

	private void handleCDebugTargetSuspend() {
		
		if ((target != null) && (session != null)) {
			
			final CLIInfoSignals c =
session.getCommandFactory().createCLIInfoSignals();

			try {
				session.postCommand(c);
				CLIInfoSignalsInfo info =
c.getMIInfoSignalsInfo();
				MISigHandle handles[] =
info.getMISignals();
				// and now do something with the results
here ...
			} catch (MIException e) {
				EcosmboxviewPlugin.say(e);
			}
			session.toString();
		}
	}
	

If this works for you you owe me something :-)  It was a bit of work to
find this out when I did it.

Hope this helps, anyway.


Norbert