Bug 441585 - Add a new debug option to log resource change event notifications

4 files changed, 57 insertions, 2 deletions

diff --git a/bundles/org.eclipse.core.resources/.options b/bundles/org.eclipse.core.resources/.options
index 6da427a8e..d8a2ced81 100644
--- a/bundles/org.eclipse.core.resources/.options
+++ b/bundles/org.eclipse.core.resources/.options
@@ -72,3 +72,6 @@ org.eclipse.core.resources/refresh=false
 # Prints debug information on resource content description 
 org.eclipse.core.resources/contenttype=false
 org.eclipse.core.resources/contenttype/cache=false
+
+# Prints debug information about resource change event notifications
+org.eclipse.core.resources/notifications=false
diff --git a/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/events/NotificationManager.java b/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/events/NotificationManager.java
index 0a07bf242..9759c67c2 100644
--- a/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/events/NotificationManager.java
+++ b/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/events/NotificationManager.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2013 IBM Corporation and others.
+ * Copyright (c) 2000, 2014 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
@@ -14,6 +14,7 @@ package org.eclipse.core.internal.events;
 import java.util.*;
 import org.eclipse.core.internal.resources.*;
 import org.eclipse.core.internal.utils.Messages;
+import org.eclipse.core.internal.utils.Policy;
 import org.eclipse.core.internal.watson.ElementTree;
 import org.eclipse.core.resources.*;
 import org.eclipse.core.runtime.*;
@@ -288,6 +289,8 @@ public class NotificationManager implements IManager, ILifecycleListener {
 						}
 
 						public void run() throws Exception {
+							if (Policy.DEBUG_NOTIFICATIONS)
+								Policy.debug("Notifying " + listener + " about resource change event" + ((ResourceChangeEvent) event).toDebugString()); //$NON-NLS-1$ //$NON-NLS-2$
 							listener.resourceChanged(event);
 						}
 					});
diff --git a/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/events/ResourceChangeEvent.java b/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/events/ResourceChangeEvent.java
index 4630adae8..4318698f5 100644
--- a/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/events/ResourceChangeEvent.java
+++ b/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/events/ResourceChangeEvent.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2011 IBM Corporation and others.
+ * Copyright (c) 2000, 2014 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
@@ -101,4 +101,51 @@ public class ResourceChangeEvent extends EventObject implements IResourceChangeE
 	public void setDelta(IResourceDelta value) {
 		delta = value;
 	}
+
+	public String toDebugString() {
+		StringBuilder output = new StringBuilder();
+		output.append("\nType: ");//$NON-NLS-1$
+		switch (type) {
+			case POST_CHANGE :
+				output.append("POST_CHANGE"); //$NON-NLS-1$
+				break;
+			case PRE_CLOSE :
+				output.append("PRE_CLOSE"); //$NON-NLS-1$
+				break;
+			case PRE_DELETE :
+				output.append("PRE_DELETE"); //$NON-NLS-1$
+				break;
+			case PRE_BUILD :
+				output.append("PRE_BUILD"); //$NON-NLS-1$
+				break;
+			case POST_BUILD :
+				output.append("POST_BUILD"); //$NON-NLS-1$
+				break;
+			case PRE_REFRESH :
+				output.append("PRE_REFRESH"); //$NON-NLS-1$
+				break;
+			default :
+				output.append("?"); //$NON-NLS-1$
+				break;
+		}
+		output.append("\nBuild kind: "); //$NON-NLS-1$
+		switch (trigger) {
+			case IncrementalProjectBuilder.FULL_BUILD :
+				output.append("FULL_BUILD"); //$NON-NLS-1$
+				break;
+			case IncrementalProjectBuilder.AUTO_BUILD :
+			case IncrementalProjectBuilder.INCREMENTAL_BUILD :
+				output.append("INCREMENTAL_BUILD"); //$NON-NLS-1$
+				break;
+			case IncrementalProjectBuilder.CLEAN_BUILD :
+				output.append("CLEAN_BUILD"); //$NON-NLS-1$
+				break;
+			default :
+				output.append(trigger);
+				break;
+		}
+		output.append("\nResource: " + (resource == null ? "null" : resource)); //$NON-NLS-1$ //$NON-NLS-2$
+		output.append("\nDelta:" + (delta == null ? " null" : ((ResourceDelta) delta).toDeepDebugString())); //$NON-NLS-1$ //$NON-NLS-2$
+		return output.toString();
+	}
 }
diff --git a/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/utils/Policy.java b/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/utils/Policy.java
index 08f2735de..a929dcc66 100644
--- a/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/utils/Policy.java
+++ b/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/utils/Policy.java
@@ -38,6 +38,7 @@ public class Policy {
 			DEBUG_CONTENT_TYPE_CACHE = DEBUG && options.getBooleanOption(ResourcesPlugin.PI_RESOURCES + "/contenttype/cache", false); //$NON-NLS-1$
 			DEBUG_HISTORY = DEBUG && options.getBooleanOption(ResourcesPlugin.PI_RESOURCES + "/history", false); //$NON-NLS-1$
 			DEBUG_NATURES = DEBUG && options.getBooleanOption(ResourcesPlugin.PI_RESOURCES + "/natures", false); //$NON-NLS-1$
+			DEBUG_NOTIFICATIONS = DEBUG && options.getBooleanOption(ResourcesPlugin.PI_RESOURCES + "/notifications", false); //$NON-NLS-1$
 			DEBUG_PREFERENCES = DEBUG && options.getBooleanOption(ResourcesPlugin.PI_RESOURCES + "/preferences", false); //$NON-NLS-1$
 
 			DEBUG_RESTORE = DEBUG && options.getBooleanOption(ResourcesPlugin.PI_RESOURCES + "/restore", false); //$NON-NLS-1$
@@ -78,6 +79,7 @@ public class Policy {
 	public static boolean DEBUG_CONTENT_TYPE_CACHE = false;
 	public static boolean DEBUG_HISTORY = false;
 	public static boolean DEBUG_NATURES = false;
+	public static boolean DEBUG_NOTIFICATIONS = false;
 	public static boolean DEBUG_PREFERENCES = false;
 	// Get timing information for restoring data
 	public static boolean DEBUG_RESTORE = false;