| /******************************************************************************* |
| * Copyright (c) 2006, 2012 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.debug.ui.monitors; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.jobs.ISchedulingRule; |
| import org.eclipse.debug.core.DebugException; |
| import org.eclipse.debug.core.model.IDebugElement; |
| import org.eclipse.debug.core.model.IStackFrame; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IChildrenCountUpdate; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IChildrenUpdate; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IHasChildrenUpdate; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext; |
| import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdate; |
| import org.eclipse.jdt.debug.core.IJavaDebugTarget; |
| import org.eclipse.jdt.debug.core.IJavaThread; |
| import org.eclipse.jdt.debug.ui.JavaDebugUtils; |
| import org.eclipse.jdt.internal.debug.core.model.JDIThread; |
| |
| /** |
| * Java thread presentation adapter. |
| * |
| * @since 3.3 |
| */ |
| public class JavaThreadContentProvider extends JavaElementContentProvider { |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.viewers.model.provisional.elements.ElementContentProvider#getChildCount(java.lang.Object, org.eclipse.debug.internal.ui.viewers.provisional.IPresentationContext) |
| */ |
| @Override |
| protected int getChildCount(Object element, IPresentationContext context, IViewerUpdate monitor) throws CoreException { |
| IJavaThread thread = (IJavaThread)element; |
| if (!thread.isSuspended()) { |
| return 0; |
| } |
| int childCount = thread.getFrameCount(); |
| if (isDisplayMonitors()) { |
| if (((IJavaDebugTarget) thread.getDebugTarget()).supportsMonitorInformation()) { |
| childCount+= thread.getOwnedMonitors().length; |
| if (thread.getContendedMonitor() != null) { |
| childCount++; |
| } |
| } else { |
| // unavailable notice |
| childCount++; |
| } |
| } |
| return childCount; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.model.elements.ElementContentProvider#getChildren(java.lang.Object, int, int, org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext, org.eclipse.core.runtime.IProgressMonitor) |
| */ |
| @Override |
| protected Object[] getChildren(Object parent, int index, int length, IPresentationContext context, IViewerUpdate monitor) throws CoreException { |
| IJavaThread thread = (IJavaThread)parent; |
| if (!thread.isSuspended()) { |
| return EMPTY; |
| } |
| return getElements(getChildren(thread), index, length); |
| } |
| |
| protected Object[] getChildren(IJavaThread thread) { |
| try { |
| if (thread instanceof JDIThread) { |
| JDIThread jThread = (JDIThread) thread; |
| if (!jThread.getDebugTarget().isSuspended() ) { |
| if (jThread.isSuspendVoteInProgress()) { |
| return EMPTY; |
| } |
| } |
| } |
| IStackFrame[] frames = thread.getStackFrames(); |
| if (!isDisplayMonitors()) { |
| return frames; |
| } |
| |
| Object[] children; |
| int length = frames.length; |
| if (((IJavaDebugTarget) thread.getDebugTarget()).supportsMonitorInformation()) { |
| IDebugElement[] ownedMonitors = JavaDebugUtils.getOwnedMonitors(thread); |
| IDebugElement contendedMonitor = JavaDebugUtils.getContendedMonitor(thread); |
| length += ownedMonitors.length; |
| if (contendedMonitor != null) { |
| length++; |
| } |
| children = new Object[length]; |
| if (ownedMonitors.length > 0) { |
| System.arraycopy(ownedMonitors, 0, children, 0, ownedMonitors.length); |
| } |
| if (contendedMonitor != null) { |
| // Insert the contended monitor after the owned monitors |
| children[ownedMonitors.length] = contendedMonitor; |
| } |
| } else { |
| children = new Object[length + 1]; |
| children[0] = new NoMonitorInformationElement(thread.getDebugTarget()); |
| } |
| int offset = children.length - frames.length; |
| System.arraycopy(frames, 0, children, offset, frames.length); |
| return children; |
| } catch (DebugException e) { |
| return EMPTY; |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.model.elements.ElementContentProvider#hasChildren(java.lang.Object, org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext, org.eclipse.core.runtime.IProgressMonitor) |
| */ |
| @Override |
| protected boolean hasChildren(Object element, IPresentationContext context, IViewerUpdate monitor) throws CoreException { |
| if (element instanceof JDIThread) { |
| JDIThread jThread = (JDIThread) element; |
| if (!jThread.getDebugTarget().isSuspended()) { |
| if (jThread.isSuspendVoteInProgress()) { |
| return false; |
| } |
| } |
| } |
| return ((IJavaThread)element).hasStackFrames() || |
| (isDisplayMonitors() && ((IJavaThread)element).hasOwnedMonitors()); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.model.elements.ElementContentProvider#getRule(org.eclipse.debug.internal.ui.viewers.model.provisional.IChildrenCountUpdate[]) |
| */ |
| @Override |
| protected ISchedulingRule getRule(IChildrenCountUpdate[] updates) { |
| return getThreadRule(updates); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.model.elements.ElementContentProvider#getRule(org.eclipse.debug.internal.ui.viewers.model.provisional.IChildrenUpdate[]) |
| */ |
| @Override |
| protected ISchedulingRule getRule(IChildrenUpdate[] updates) { |
| return getThreadRule(updates); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.model.elements.ElementContentProvider#getRule(org.eclipse.debug.internal.ui.viewers.model.provisional.IHasChildrenUpdate[]) |
| */ |
| @Override |
| protected ISchedulingRule getRule(IHasChildrenUpdate[] updates) { |
| return getThreadRule(updates); |
| } |
| |
| /** |
| * Returns a scheduling rule to ensure we aren't trying to get thread content |
| * while executing an implicit evaluation (like toString() for the details |
| * pane). |
| * |
| * @param updates viewer updates |
| * @return scheduling rule or <code>null</code> |
| */ |
| private ISchedulingRule getThreadRule(IViewerUpdate[] updates) { |
| if (updates.length > 0) { |
| Object element = updates[0].getElement(); |
| if (element instanceof JDIThread) { |
| return ((JDIThread)element).getThreadRule(); |
| } |
| } |
| return null; |
| } |
| |
| |
| } |