Bug 486521 - "OS Resources" - allow attaching to selected process

- Extend OSView to provide a structured selection of
IResourcesInformation
- Add Connect process handler in view toolbar.
- Add Connect process handler in selection pop-up menu

Change-Id: I9e2ca4bafc72d035f78cbbe87ee6ff0f56f6ae22
Signed-off-by: Teodor Madan <teodor.madan@nxp.com>

dsf-gdb/org.eclipse.cdt.dsf.gdb.ui/plugin.properties

@@ -54,3 +54,8 @@ action.fetchMoreChildren.label=Fetch More Children
 
 # OS view
 view.osresources.name=OS Resources
+
+command.connect.description = Connect to selected processes
+command.connect.name = Connect
+command.connect.label = Connect
+command.connect.tooltip = Connect to process

dsf-gdb/org.eclipse.cdt.dsf.gdb.ui/plugin.xml

@@ -321,6 +321,11 @@
           id="org.eclipse.cdt.dsf.gdb.ui.command.selectPreviousTraceRecord"
           name="%command.prevTraceRecord.name">
       </command>
+      <command
+            description="%command.connect.description"
+            id="org.eclipse.cdt.dsf.gdb.ui.command.osview.connect"
+            name="%command.connect.name">
+      </command>
    </extension>
    <extension
          point="org.eclipse.ui.handlers">
@@ -380,6 +385,18 @@
             </with>
             </activeWhen>
       </handler>
+      <handler
+            class="org.eclipse.cdt.dsf.gdb.internal.ui.osview.AttachProcessHandler"
+            commandId="org.eclipse.cdt.dsf.gdb.ui.command.osview.connect">
+            <activeWhen>
+            <with variable="selection">
+               <iterate operator="and">
+                  <adapt type="org.eclipse.cdt.dsf.gdb.service.IGDBHardwareAndOS2$IResourcesInformation"/>
+               </iterate>
+               <count value="+"/>
+            </with>
+            </activeWhen>
+      </handler>
    </extension>
    <extension
          point="org.eclipse.ui.menus">
@@ -416,6 +433,28 @@
                style="push">
          </command>
       </menuContribution>
+         <menuContribution
+               locationURI="toolbar:org.eclipse.cdt.dsf.gdb.ui.osresources.view?after=additions">
+            <command
+                  commandId="org.eclipse.cdt.dsf.gdb.ui.command.osview.connect"
+                  icon="platform:/plugin/org.eclipse.cdt.debug.ui/icons/obj16/connect.gif"
+                  label="%command.connect.label"
+                  style="push"
+                  tooltip="%command.connect.tooltip">
+            </command>
+         </menuContribution>
+         
+          <menuContribution allPopups="true" locationURI="popup:org.eclipse.cdt.dsf.gdb.ui.osresources.view?after=additions">                
+            <command
+                  commandId="org.eclipse.cdt.dsf.gdb.ui.command.osview.connect"
+                  icon="platform:/plugin/org.eclipse.cdt.debug.ui/icons/obj16/connect.gif"
+                  label="%command.connect.label"
+                  style="push"
+                  tooltip="%command.connect.tooltip">
+               <visibleWhen checkEnabled="true">
+               </visibleWhen>
+            </command>
+         </menuContribution>
    </extension>
    <extension
          point="org.eclipse.cdt.debug.ui.BreakpointActionPage">

dsf-gdb/org.eclipse.cdt.dsf.gdb.ui/src/org/eclipse/cdt/dsf/gdb/internal/ui/osview/AttachProcessHandler.java

@@ -0,0 +1,244 @@
+/*******************************************************************************
+ * Copyright (c) 2016 Freescale Semiconductor and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Teodor Madan (Freescale Semiconductor) - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.dsf.gdb.internal.ui.osview;
+
+import java.text.MessageFormat;
+import java.util.ArrayList;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Set;
+
+import org.eclipse.cdt.dsf.concurrent.DataRequestMonitor;
+import org.eclipse.cdt.dsf.concurrent.Query;
+import org.eclipse.cdt.dsf.concurrent.RequestMonitor;
+import org.eclipse.cdt.dsf.concurrent.Sequence;
+import org.eclipse.cdt.dsf.datamodel.IDMContext;
+import org.eclipse.cdt.dsf.debug.service.IProcesses;
+import org.eclipse.cdt.dsf.debug.service.IProcesses.IProcessDMContext;
+import org.eclipse.cdt.dsf.debug.service.command.ICommandControlService;
+import org.eclipse.cdt.dsf.debug.service.command.ICommandControlService.ICommandControlDMContext;
+import org.eclipse.cdt.dsf.gdb.internal.ui.GdbUIPlugin;
+import org.eclipse.cdt.dsf.gdb.service.IGDBProcesses;
+import org.eclipse.cdt.dsf.gdb.service.IGDBHardwareAndOS2.IResourcesInformation;
+import org.eclipse.cdt.dsf.service.DsfServicesTracker;
+import org.eclipse.cdt.dsf.service.DsfSession;
+import org.eclipse.core.commands.AbstractHandler;
+import org.eclipse.core.commands.ExecutionEvent;
+import org.eclipse.core.commands.ExecutionException;
+import org.eclipse.core.commands.IHandler;
+import org.eclipse.core.expressions.IEvaluationContext;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.ICoreRunnable;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.core.runtime.jobs.Job;
+import org.eclipse.debug.core.DebugPlugin;
+import org.eclipse.debug.core.IStatusHandler;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.ui.ISources;
+import org.eclipse.ui.IWorkbenchPart;
+import org.eclipse.ui.handlers.HandlerUtil;
+import org.osgi.framework.BundleContext;
+
+/**
+ *
+ */
+public class AttachProcessHandler extends AbstractHandler implements IHandler {
+
+	private static final String PROCESSES_CLASS = "processes"; //$NON-NLS-1$
+	private static final String THREADS_CLASS = "threads"; //$NON-NLS-1$
+
+	@Override
+	public void setEnabled(Object evaluationContext) {
+		boolean state = false;
+		if (evaluationContext instanceof IEvaluationContext) {
+			Object p = ((IEvaluationContext) evaluationContext).getVariable(ISources.ACTIVE_PART_NAME);
+			Object s = ((IEvaluationContext) evaluationContext).getVariable(ISources.ACTIVE_CURRENT_SELECTION_NAME);
+			if (p instanceof OSResourcesView && s instanceof IStructuredSelection) {
+				IStructuredSelection sel2 = (IStructuredSelection) s;
+				if (!sel2.isEmpty() && sel2.getFirstElement() instanceof IResourcesInformation) {
+					OSResourcesView rview = (OSResourcesView) p;
+					// check that processes class resources is selected.
+					ICommandControlDMContext sessionContext = rview.getSessionContext();
+					if (sessionContext != null && (PROCESSES_CLASS.equals(rview.getResourceClass())
+							|| THREADS_CLASS.equals(rview.getResourceClass()))) {
+						// check that attach is supported"
+						state = isAttachSupported(sessionContext);
+					}
+				}
+			}
+		}
+		setBaseEnabled(state);
+
+	}
+
+	private boolean isAttachSupported(final ICommandControlDMContext context) {
+		DsfSession session = DsfSession.getSession(context.getSessionId());
+		if (session == null) {
+			// can be null while terminating
+			return false;
+		}
+
+		Query<Boolean> canConnectQuery = new Query<Boolean>() {
+			@Override
+			public void execute(DataRequestMonitor<Boolean> rm) {
+				BundleContext c = GdbUIPlugin.getDefault().getBundle().getBundleContext();
+				DsfServicesTracker tracker = new DsfServicesTracker(c, context.getSessionId());
+
+				IProcesses procService = tracker.getService(IProcesses.class);
+				ICommandControlService commandControl = tracker.getService(ICommandControlService.class);
+
+				if (procService != null && commandControl != null) {
+					procService.isDebuggerAttachSupported(commandControl.getContext(), rm);
+				} else {
+					rm.done(false);
+				}
+			}
+		};
+		try {
+			session.getExecutor().execute(canConnectQuery);
+			return canConnectQuery.get();
+		} catch (InterruptedException | java.util.concurrent.ExecutionException e) {
+			// Can be thrown if the session is shutdown
+		}
+		return false;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see
+	 * org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.
+	 * ExecutionEvent)
+	 */
+	@Override
+	public Object execute(ExecutionEvent event) throws ExecutionException {
+		ISelection selection = HandlerUtil.getCurrentSelection(event);
+		IWorkbenchPart part = HandlerUtil.getActivePart(event);
+		if (selection instanceof IStructuredSelection && part instanceof OSResourcesView) {
+			// get column to extract pid of the selected process/thread
+			int pidColumn = -1;
+			IResourcesInformation firstSelection = (IResourcesInformation) ((IStructuredSelection) selection)
+					.getFirstElement();
+			for (int i = 0; i < firstSelection.getColumnNames().length; i++) {
+				if ("pid".equalsIgnoreCase(firstSelection.getColumnNames()[i])) { //$NON-NLS-1$
+					pidColumn = i;
+					break;
+				}
+			}
+			if (pidColumn < 0) {
+				GdbUIPlugin.log(
+						new Status(IStatus.ERROR, GdbUIPlugin.PLUGIN_ID, "Missing 'pid' column to perform attach")); //$NON-NLS-1$
+				return null;
+			}
+
+			// Use a set of process. It is possible to have multiple entries
+			// with the same pid, e.g. threads with same process id
+			Set<String> process_ids = new LinkedHashSet<String>();
+			for (Object sel : ((IStructuredSelection) selection).toList()) {
+				IResourcesInformation ri = (IResourcesInformation) sel;
+				if (pidColumn >= 0) {
+					String pid = ri.getContent()[0][pidColumn];
+					try {
+						Integer.parseInt(pid); // test for integer value
+						process_ids.add(pid);
+					} catch (NumberFormatException e) {
+						GdbUIPlugin.log(new Status(IStatus.ERROR, GdbUIPlugin.PLUGIN_ID, "Non-integer pid " + pid, e)); //$NON-NLS-1$
+					}
+
+				}
+			}
+
+			final ICommandControlDMContext context = ((OSResourcesView) part).getSessionContext();
+			final List<Sequence.Step> attach_steps = new ArrayList<Sequence.Step>(process_ids.size());
+			for (final String p : process_ids) {
+				attach_steps.add(new Sequence.Step() {
+					@Override
+					public void execute(RequestMonitor rm) {
+						attachToProcess(context, p, rm);
+					}
+
+					@Override
+					public String getTaskName() {
+						return MessageFormat.format(Messages.OSView_AttachTask, p);
+					}
+				});
+			}
+			if (!attach_steps.isEmpty()) {
+				Job.create(Messages.OSView_AttachJobName, new ICoreRunnable() {
+					@Override
+					public void run(IProgressMonitor monitor) throws CoreException {
+						DsfSession session = DsfSession.getSession(context.getSessionId());
+						Sequence sequence = new Sequence(session.getExecutor(), monitor, Messages.OSView_AttachJobName,
+								"") { //$NON-NLS-1$
+							@Override
+							public Step[] getSteps() {
+								return attach_steps.toArray(new Step[attach_steps.size()]);
+							}
+						};
+						session.getExecutor().execute(sequence);
+						try {
+							sequence.get();
+						} catch (InterruptedException | java.util.concurrent.ExecutionException e) {
+							// ignore here.
+						}
+					}
+				}).schedule();
+			}
+		}
+		return null;
+	}
+
+	private void attachToProcess(final ICommandControlDMContext context, final String pid, RequestMonitor rm) {
+		BundleContext c = GdbUIPlugin.getDefault().getBundle().getBundleContext();
+		DsfServicesTracker tracker = new DsfServicesTracker(c, context.getSessionId());
+		try {
+			IGDBProcesses procService = tracker.getService(IGDBProcesses.class);
+			if (procService != null) {
+				// attach directly without looking for the binary
+				// since GDB will figure it out by itself
+
+				// TODO: update with asking user for the binary for cases
+				// not covered by GDB (e.g. GDB version < 7.10)
+
+				IProcessDMContext procDmc = procService.createProcessContext(context, pid);
+				procService.attachDebuggerToProcess(procDmc, new DataRequestMonitor<IDMContext>(
+						DsfSession.getSession(context.getSessionId()).getExecutor(), rm) {
+					@Override
+					protected void handleErrorOrWarning() {
+						IStatus status = getStatus();
+						if (status != null && !status.isOK()) {
+							IStatusHandler statusHandler = DebugPlugin.getDefault().getStatusHandler(status);
+							if (statusHandler != null) {
+								try {
+									statusHandler.handleStatus(status, null);
+								} catch (CoreException ex) {
+									GdbUIPlugin.getDefault().getLog().log(ex.getStatus());
+								}
+							} else {
+								GdbUIPlugin.getDefault().getLog().log(status);
+							}
+						}
+						handleSuccess(); // mark as success even if fail.
+					}
+
+				});
+			} else {
+				rm.done();
+				GdbUIPlugin.log(new Throwable("Could not retreive process service for context" + context)); //$NON-NLS-1$
+			}
+		} finally {
+			tracker.dispose();
+		}
+	}
+}

dsf-gdb/org.eclipse.cdt.dsf.gdb.ui/src/org/eclipse/cdt/dsf/gdb/internal/ui/osview/Messages.java

@@ -30,6 +30,8 @@ public class Messages extends NLS {
 	public static String OSView_13;
 	public static String OSView_14;
 	public static String OSView_15;
+	public static String OSView_AttachJobName;
+	public static String OSView_AttachTask;
 	static {
 		// initialize resource bundle
 		NLS.initializeMessages(Messages.class.getName(), Messages.class);

dsf-gdb/org.eclipse.cdt.dsf.gdb.ui/src/org/eclipse/cdt/dsf/gdb/internal/ui/osview/Messages.properties

@@ -21,3 +21,5 @@ OSView_12=No data has been fetched yet. Target is busy.
 OSView_13=Waiting for the debug session to initialize.
 OSView_14=Objects from different debug sessions are selected.
 OSView_15=No debug session is selected.
+OSView_AttachJobName=Connecting debug session to processes
+OSView_AttachTask=Connecting to process {0}

dsf-gdb/org.eclipse.cdt.dsf.gdb.ui/src/org/eclipse/cdt/dsf/gdb/internal/ui/osview/OSData.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2011, 2012 Mentor Graphics and others.
+ * Copyright (c) 2011, 2016 Mentor Graphics and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -7,6 +7,7 @@
  *
  * Contributors:
  *     Vladimir Prus (Mentor Graphics) - initial API and implementation
+ *     Teodor Madan (Freescale Semiconductor) - Bug 486521: attaching to selected process
  *******************************************************************************/
 
 package org.eclipse.cdt.dsf.gdb.internal.ui.osview;
@@ -120,7 +121,7 @@ implements ITableLabelProvider, IStructuredContentProvider
 
 	@Override
 	public String getColumnText(Object obj, int index) {
-		return ((String[]) obj)[remap.get(index)];
+		return ((IResourcesInformation) obj).getContent()[0][remap.get(index)];
 	}
 
 	@Override
@@ -143,6 +144,23 @@ implements ITableLabelProvider, IStructuredContentProvider
 
 	@Override
 	public Object[] getElements(Object parent) {
-		return data.getContent();
+		// split into array of resource information for each raw
+		String[][] content = data.getContent();
+		IResourcesInformation[] split_ri = new IResourcesInformation[content.length];
+		for (int i = 0; i< content.length; ++i) {
+			final String[][] row_content = new String[1][content[i].length];
+			row_content[0] = content[i];
+			split_ri[i]=new IResourcesInformation() {
+				@Override
+				public String[] getColumnNames() {
+					return data.getColumnNames();
+				}
+				@Override
+				public String[][] getContent() {
+					return row_content;
+				}
+			};
+		}
+		return split_ri;
 	}
 }

dsf-gdb/org.eclipse.cdt.dsf.gdb.ui/src/org/eclipse/cdt/dsf/gdb/internal/ui/osview/OSResourcesView.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2011, 2015 Mentor Graphics and others.
+ * Copyright (c) 2011, 2016 Mentor Graphics and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -7,6 +7,7 @@
  *
  * Contributors:
  *     Vladimir Prus (Mentor Graphics) - initial API and implementation
+ *     Teodor Madan (Freescale Semiconductor) - Bug 486521: attaching to selected process
  *******************************************************************************/
 
 package org.eclipse.cdt.dsf.gdb.internal.ui.osview;
@@ -40,6 +41,10 @@ import org.eclipse.debug.ui.contexts.IDebugContextManager;
 import org.eclipse.debug.ui.contexts.IDebugContextService;
 import org.eclipse.jface.action.Action;
 import org.eclipse.jface.action.IAction;
+import org.eclipse.jface.action.IMenuListener;
+import org.eclipse.jface.action.IMenuManager;
+import org.eclipse.jface.action.MenuManager;
+import org.eclipse.jface.action.Separator;
 import org.eclipse.jface.resource.ImageDescriptor;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.IStructuredSelection;
@@ -56,9 +61,11 @@ import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Event;
 import org.eclipse.swt.widgets.Link;
 import org.eclipse.swt.widgets.Listener;
+import org.eclipse.swt.widgets.Menu;
 import org.eclipse.swt.widgets.Table;
 import org.eclipse.swt.widgets.TableColumn;
 import org.eclipse.ui.IActionBars;
+import org.eclipse.ui.IWorkbenchActionConstants;
 import org.eclipse.ui.part.ViewPart;
 import org.eclipse.ui.progress.UIJob;
 import org.osgi.framework.Bundle;
@@ -138,8 +145,8 @@ public class OSResourcesView extends ViewPart implements DsfSession.SessionEnded
 			@Override
 			public void handleEvent(Event event) {
 				if (event.text.equals("fetch")) //$NON-NLS-1$
-					if (fSessionData != null && fResourceClass != null)
+					if (fSessionData != null && getResourceClass() != null)
-						fSessionData.fetchData(fResourceClass);
+						fSessionData.fetchData(getResourceClass());
 			}
 		});
 		fNothingLabelContainer.setBackground(fNothingLabel.getBackground());
@@ -152,9 +159,9 @@ public class OSResourcesView extends ViewPart implements DsfSession.SessionEnded
 
 			@Override
 			public void resourceClassChanged(String newClass) {
-				fResourceClass = newClass;
+				setResourceClass(newClass);
 				// Since user explicitly changed the class, initiate fetch immediately.
-				fSessionData.fetchData(fResourceClass);
+				fSessionData.fetchData(getResourceClass());
 				// Do not call 'update()' here. fetchData call above will notify
 				// us at necessary moments.
 			}
@@ -165,8 +172,8 @@ public class OSResourcesView extends ViewPart implements DsfSession.SessionEnded
 		fRefreshAction = new Action() {
 			@Override
 			public void run() {
-				if (fSessionData != null && fResourceClass != null)
+				if (fSessionData != null && getResourceClass() != null)
-					fSessionData.fetchData(fResourceClass);
+					fSessionData.fetchData(getResourceClass());
 			}
 		};
 		fRefreshAction.setText(Messages.OSView_3);
@@ -184,10 +191,32 @@ public class OSResourcesView extends ViewPart implements DsfSession.SessionEnded
         bars.getToolBarManager().add(fRefreshAction);
         bars.updateActionBars();
 
-        fResourceClass = fResourceClassEditor.getResourceClassId();
+        createContextMenu();
+		getSite().setSelectionProvider(fViewer);
+		
+
+        setResourceClass(fResourceClassEditor.getResourceClassId());
 
 		setupContextListener();
 		DsfSession.addSessionEndedListener(this);
+		
+
+	}
+
+	private void createContextMenu() {
+		MenuManager menuMgr= new MenuManager("#PopUp"); //$NON-NLS-1$
+		menuMgr.setRemoveAllWhenShown(true);
+		menuMgr.addMenuListener(new IMenuListener() {
+			@Override
+			public void menuAboutToShow(IMenuManager manager) {
+				manager.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));
+			}
+		});
+		Menu menu= menuMgr.createContextMenu(fViewer.getControl());
+		fViewer.getControl().setMenu(menu);
+
+		// register the context menu such that other plug-ins may contribute to it
+		getSite().registerContextMenu(menuMgr, fViewer);
 	}
 
 	private void setupContextListener() {
@@ -370,7 +399,7 @@ public class OSResourcesView extends ViewPart implements DsfSession.SessionEnded
 
 		boolean enable = fSessionData.canFetchData();	
 		fRefreshAction.setEnabled(enable);
-		fResourceClass = fResourceClassEditor.updateClasses(fSessionData.getResourceClasses());
+		setResourceClass(fResourceClassEditor.updateClasses(fSessionData.getResourceClasses()));
 		fResourceClassEditor.setEnabled(enable);
 		
 		if (!fSessionData.osResourcesSupported()) {
@@ -394,7 +423,7 @@ public class OSResourcesView extends ViewPart implements DsfSession.SessionEnded
 			return;
 		}
 
-		if (fResourceClass == null)
+		if (getResourceClass() == null)
 		{
 			fRefreshAction.setEnabled(false);
 			fResourceClassEditor.setEnabled(true);
@@ -403,7 +432,7 @@ public class OSResourcesView extends ViewPart implements DsfSession.SessionEnded
 		}
 		
 
-		final OSData data = fSessionData.existingData(fResourceClass);
+		final OSData data = fSessionData.existingData(getResourceClass());
 
 		if (fSessionData.fetchingContent())
 		{
@@ -419,7 +448,7 @@ public class OSResourcesView extends ViewPart implements DsfSession.SessionEnded
 		else
 		{
 			SimpleDateFormat format = new SimpleDateFormat(Messages.OSView_8);
-			fRefreshAction.setToolTipText(format.format(fSessionData.timestamp(fResourceClass)));
+			fRefreshAction.setToolTipText(format.format(fSessionData.timestamp(getResourceClass())));
 			if (data != fTableShownData)
 			{
 				Job job = new UIJob(Messages.OSView_9) {
@@ -486,11 +515,11 @@ public class OSResourcesView extends ViewPart implements DsfSession.SessionEnded
 		while (table.getColumnCount() > 0)
 			table.getColumns()[0].dispose();
 
-		fColumnLayout = fColumnLayouts.get(fResourceClass);
+		fColumnLayout = fColumnLayouts.get(getResourceClass());
 		if (fColumnLayout == null)
 		{
-			fColumnLayout = new ColumnLayout(fResourceClass);
+			fColumnLayout = new ColumnLayout(getResourceClass());
-			fColumnLayouts.put(fResourceClass, fColumnLayout);
+			fColumnLayouts.put(getResourceClass(), fColumnLayout);
 		}
 		
 		for (int i = 0; i < data.getColumnCount(); ++i) {
@@ -667,4 +696,25 @@ public class OSResourcesView extends ViewPart implements DsfSession.SessionEnded
 	public void setFocus() {
 		fViewer.getControl().setFocus();
 	}
+
+	/**
+	 * @return the currently selected and displayed resource class
+	 */
+	public String getResourceClass() {
+		return fResourceClass;
+	}
+
+	/**
+	 * @param resourceClass the resource class to set
+	 */
+	private void setResourceClass(String resourceClass) {
+		fResourceClass = resourceClass;
+	}
+	
+	/**
+	 * @return currently debug context for which resources are displayed
+	 */
+	public ICommandControlDMContext getSessionContext() {
+		return fSessionData != null ? fSessionData.getContext() : null;
+	}
 }

dsf-gdb/org.eclipse.cdt.dsf.gdb.ui/src/org/eclipse/cdt/dsf/gdb/internal/ui/osview/SessionOSData.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2011, 2013 Mentor Graphics and others.
+ * Copyright (c) 2011, 2016 Mentor Graphics and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -7,6 +7,7 @@
  *
  * Contributors:
  *     Vladimir Prus (Mentor Graphics) - initial API and implementation
+ *     Teodor Madan (Freescale Semiconductor) - Bug 486521: attaching to selected process
  *******************************************************************************/
 
 package org.eclipse.cdt.dsf.gdb.internal.ui.osview;
@@ -220,7 +221,7 @@ public class SessionOSData {
 						}
 						else
 						{
-							StatusManager.getManager().handle(getStatus(), StatusManager.BLOCK);
+							StatusManager.getManager().handle(getStatus(), StatusManager.SHOW);
 						}
 						notifyUI();
 					}
@@ -291,4 +292,11 @@ public class SessionOSData {
     		notifyUI();
     	}
     }
+
+	/**
+	 * @return the fContext
+	 */
+	public ICommandControlDMContext getContext() {
+		return fContext;
+	}
 }