diff --git a/features/org.eclipse.emf.cdo.examples-feature/feature.xml b/features/org.eclipse.emf.cdo.examples-feature/feature.xml
index 4c3f4e9..734e1c8 100644
--- a/features/org.eclipse.emf.cdo.examples-feature/feature.xml
+++ b/features/org.eclipse.emf.cdo.examples-feature/feature.xml
@@ -12,7 +12,7 @@
 <feature
       id="org.eclipse.emf.cdo.examples"
       label="%featureName"
-      version="4.2.200.qualifier"
+      version="4.2.300.qualifier"
       provider-name="%providerName"
       image="eclipse_update_120.jpg"
       license-feature="org.eclipse.emf.cdo.license"
diff --git a/features/org.eclipse.net4j-feature/feature.xml b/features/org.eclipse.net4j-feature/feature.xml
index d8dd78e..b762537 100644
--- a/features/org.eclipse.net4j-feature/feature.xml
+++ b/features/org.eclipse.net4j-feature/feature.xml
@@ -12,7 +12,7 @@
 <feature
       id="org.eclipse.net4j"
       label="%featureName"
-      version="4.4.100.qualifier"
+      version="4.5.0.qualifier"
       provider-name="%providerName"
       image="eclipse_update_120.jpg"
       license-feature="org.eclipse.emf.cdo.license"
diff --git a/features/org.eclipse.net4j.db-feature/feature.xml b/features/org.eclipse.net4j.db-feature/feature.xml
index 3d78a3b..c378666 100644
--- a/features/org.eclipse.net4j.db-feature/feature.xml
+++ b/features/org.eclipse.net4j.db-feature/feature.xml
@@ -12,7 +12,7 @@
 <feature
       id="org.eclipse.net4j.db"
       label="%featureName"
-      version="4.4.100.qualifier"
+      version="4.5.0.qualifier"
       provider-name="%providerName"
       license-feature="org.eclipse.emf.cdo.license"
       license-feature-version="0.0.0">
diff --git a/features/org.eclipse.net4j.defs-feature/feature.xml b/features/org.eclipse.net4j.defs-feature/feature.xml
index 92838bc..8b5815a 100644
--- a/features/org.eclipse.net4j.defs-feature/feature.xml
+++ b/features/org.eclipse.net4j.defs-feature/feature.xml
@@ -12,7 +12,7 @@
 <feature
       id="org.eclipse.net4j.defs"
       label="%featureName"
-      version="4.4.100.qualifier"
+      version="4.5.0.qualifier"
       provider-name="%providerName"
       license-feature="org.eclipse.emf.cdo.license"
       license-feature-version="0.0.0">
diff --git a/features/org.eclipse.net4j.sdk-feature/feature.xml b/features/org.eclipse.net4j.sdk-feature/feature.xml
index 1aaaaca..b00868b 100644
--- a/features/org.eclipse.net4j.sdk-feature/feature.xml
+++ b/features/org.eclipse.net4j.sdk-feature/feature.xml
@@ -12,7 +12,7 @@
 <feature
       id="org.eclipse.net4j.sdk"
       label="%featureName"
-      version="4.4.100.qualifier"
+      version="4.5.0.qualifier"
       provider-name="%providerName"
       image="eclipse_update_120.jpg"
       license-feature="org.eclipse.emf.cdo.license"
diff --git a/features/org.eclipse.net4j.util-feature/feature.xml b/features/org.eclipse.net4j.util-feature/feature.xml
index 0b15996..5306678 100644
--- a/features/org.eclipse.net4j.util-feature/feature.xml
+++ b/features/org.eclipse.net4j.util-feature/feature.xml
@@ -12,7 +12,7 @@
 <feature
       id="org.eclipse.net4j.util"
       label="%featureName"
-      version="4.4.0.qualifier"
+      version="4.5.0.qualifier"
       provider-name="%providerName"
       image="eclipse_update_120.jpg"
       license-feature="org.eclipse.emf.cdo.license"
diff --git a/features/org.eclipse.net4j.util.ui-feature/feature.xml b/features/org.eclipse.net4j.util.ui-feature/feature.xml
index 62e0274..8715937 100644
--- a/features/org.eclipse.net4j.util.ui-feature/feature.xml
+++ b/features/org.eclipse.net4j.util.ui-feature/feature.xml
@@ -12,7 +12,7 @@
 <feature
       id="org.eclipse.net4j.util.ui"
       label="%featureName"
-      version="4.4.100.qualifier"
+      version="4.5.0.qualifier"
       provider-name="%providerName"
       image="eclipse_update_120.jpg"
       license-feature="org.eclipse.emf.cdo.license"
diff --git a/plugins/org.eclipse.emf.cdo.common/src/org/eclipse/emf/cdo/internal/common/revision/AbstractCDORevisionCache.java b/plugins/org.eclipse.emf.cdo.common/src/org/eclipse/emf/cdo/internal/common/revision/AbstractCDORevisionCache.java
index 7d9f7ba..8ae662e 100644
--- a/plugins/org.eclipse.emf.cdo.common/src/org/eclipse/emf/cdo/internal/common/revision/AbstractCDORevisionCache.java
+++ b/plugins/org.eclipse.emf.cdo.common/src/org/eclipse/emf/cdo/internal/common/revision/AbstractCDORevisionCache.java
@@ -14,6 +14,7 @@
 
 import org.eclipse.emf.cdo.common.branch.CDOBranch;
 import org.eclipse.emf.cdo.common.branch.CDOBranchManager;
+import org.eclipse.emf.cdo.common.branch.CDOBranchVersion;
 import org.eclipse.emf.cdo.common.id.CDOID;
 import org.eclipse.emf.cdo.common.revision.CDORevision;
 import org.eclipse.emf.cdo.common.revision.CDORevisionKey;
@@ -21,8 +22,11 @@
 import org.eclipse.emf.cdo.spi.common.revision.InternalCDORevision;
 import org.eclipse.emf.cdo.spi.common.revision.InternalCDORevisionCache;
 
+import org.eclipse.net4j.util.ReflectUtil.ExcludeFromDump;
 import org.eclipse.net4j.util.event.IListener;
+import org.eclipse.net4j.util.lifecycle.Lifecycle;
 import org.eclipse.net4j.util.om.trace.ContextTracer;
+import org.eclipse.net4j.util.ref.CleanableReferenceQueue;
 import org.eclipse.net4j.util.ref.ReferenceQueueWorker;
 
 import java.lang.ref.Reference;
@@ -33,20 +37,36 @@
 /**
  * @author Eike Stepper
  */
-public abstract class AbstractCDORevisionCache extends ReferenceQueueWorker<InternalCDORevision>
-    implements InternalCDORevisionCache
+public abstract class AbstractCDORevisionCache extends Lifecycle implements InternalCDORevisionCache
 {
   private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_REVISION, AbstractCDORevisionCache.class);
 
   private static boolean disableGC;
 
+  @ExcludeFromDump
+  private final CleanableReferenceQueue<InternalCDORevision> referenceQueue = new CleanableReferenceQueue<InternalCDORevision>()
+  {
+    @Override
+    protected Reference<InternalCDORevision> createReference(InternalCDORevision revision)
+    {
+      return AbstractCDORevisionCache.this.createReference(revision);
+    }
+
+    @Override
+    protected void cleanReference(Reference<? extends InternalCDORevision> reference)
+    {
+      AbstractCDORevisionCache.this.cleanReference(reference);
+    }
+  };
+
   private CDOBranchManager branchManager;
 
   private String name;
 
   public AbstractCDORevisionCache()
   {
-    setDaemon(true);
+    setPollMillis(ReferenceQueueWorker.DEFAULT_POLL_MILLIS);
+    setMaxWorkPerPoll(ReferenceQueueWorker.DEFAULT_MAX_WORK_PER_POLL);
   }
 
   public CDOBranchManager getBranchManager()
@@ -82,25 +102,79 @@
     this.name = name;
   }
 
+  public long getPollMillis()
+  {
+    return referenceQueue.getPollMillis();
+  }
+
+  public void setPollMillis(long pollMillis)
+  {
+    referenceQueue.setPollMillis(pollMillis);
+  }
+
+  public int getMaxWorkPerPoll()
+  {
+    return referenceQueue.getMaxWorkPerPoll();
+  }
+
+  public void setMaxWorkPerPoll(int maxWorkPerPoll)
+  {
+    referenceQueue.setMaxWorkPerPoll(maxWorkPerPoll);
+  }
+
+  public final void addRevision(CDORevision revision)
+  {
+    referenceQueue.register((InternalCDORevision)revision);
+    doAddRevision(revision);
+  }
+
+  protected abstract void doAddRevision(CDORevision revision);
+
+  public final CDORevision removeRevision(CDOID id, CDOBranchVersion branchVersion)
+  {
+    referenceQueue.clean();
+    return doRemoveRevision(id, branchVersion);
+  }
+
+  protected abstract CDORevision doRemoveRevision(CDOID id, CDOBranchVersion branchVersion);
+
   @Override
   public String toString()
   {
     return formatName("CDORevisionCache");
   }
 
-  @Override
-  protected String getThreadName()
-  {
-    return formatName("CDORevisionCacheCleaner");
-  }
-
   private String formatName(String prefix)
   {
     return prefix + (name == null ? "" : "-" + name);
   }
 
-  @Override
-  protected void work(Reference<? extends InternalCDORevision> reference)
+  protected Reference<InternalCDORevision> createReference(CDORevision revision)
+  {
+    if (disableGC)
+    {
+      return createStrongReference(revision);
+    }
+
+    if (TRACER.isEnabled())
+    {
+      TRACER.format("Adding revision {0} to {1}", revision, this); //$NON-NLS-1$
+    }
+
+    return new CacheSoftReference((InternalCDORevision)revision, referenceQueue);
+  }
+
+  private Reference<InternalCDORevision> createStrongReference(CDORevision revision)
+  {
+    if (TRACER.isEnabled())
+    {
+      TRACER.format("Adding revision {0} to {1} (STRONGLY REFERENCED)", revision, this); //$NON-NLS-1$
+    }
+
+    return new CacheStrongReference((InternalCDORevision)revision);
+  }
+
+  protected void cleanReference(Reference<? extends InternalCDORevision> reference)
   {
     CDORevisionKey key = (CDORevisionKey)reference;
 
@@ -127,31 +201,6 @@
     }
   }
 
-  protected Reference<InternalCDORevision> createReference(CDORevision revision)
-  {
-    if (disableGC)
-    {
-      return createStrongReference(revision);
-    }
-
-    if (TRACER.isEnabled())
-    {
-      TRACER.format("Adding revision {0} to {1}", revision, this); //$NON-NLS-1$
-    }
-
-    return new CacheSoftReference((InternalCDORevision)revision, getQueue());
-  }
-
-  private Reference<InternalCDORevision> createStrongReference(CDORevision revision)
-  {
-    if (TRACER.isEnabled())
-    {
-      TRACER.format("Adding revision {0} to {1} (STRONGLY REFERENCED)", revision, this); //$NON-NLS-1$
-    }
-
-    return new CacheStrongReference((InternalCDORevision)revision);
-  }
-
   /**
    * @author Eike Stepper
    */
diff --git a/plugins/org.eclipse.emf.cdo.common/src/org/eclipse/emf/cdo/internal/common/revision/CDORevisionCacheAuditing.java b/plugins/org.eclipse.emf.cdo.common/src/org/eclipse/emf/cdo/internal/common/revision/CDORevisionCacheAuditing.java
index c89da07..391c32c 100644
--- a/plugins/org.eclipse.emf.cdo.common/src/org/eclipse/emf/cdo/internal/common/revision/CDORevisionCacheAuditing.java
+++ b/plugins/org.eclipse.emf.cdo.common/src/org/eclipse/emf/cdo/internal/common/revision/CDORevisionCacheAuditing.java
@@ -168,7 +168,8 @@
     return result;
   }
 
-  public void addRevision(CDORevision revision)
+  @Override
+  protected void doAddRevision(CDORevision revision)
   {
     CheckUtil.checkArg(revision, "revision");
 
@@ -194,7 +195,8 @@
     }
   }
 
-  public InternalCDORevision removeRevision(CDOID id, CDOBranchVersion branchVersion)
+  @Override
+  protected InternalCDORevision doRemoveRevision(CDOID id, CDOBranchVersion branchVersion)
   {
     CDOBranch branch = branchVersion.getBranch();
     checkBranch(branch);
diff --git a/plugins/org.eclipse.emf.cdo.common/src/org/eclipse/emf/cdo/internal/common/revision/CDORevisionCacheNonAuditing.java b/plugins/org.eclipse.emf.cdo.common/src/org/eclipse/emf/cdo/internal/common/revision/CDORevisionCacheNonAuditing.java
index f5889d2..f4b2a8a 100644
--- a/plugins/org.eclipse.emf.cdo.common/src/org/eclipse/emf/cdo/internal/common/revision/CDORevisionCacheNonAuditing.java
+++ b/plugins/org.eclipse.emf.cdo.common/src/org/eclipse/emf/cdo/internal/common/revision/CDORevisionCacheNonAuditing.java
@@ -179,7 +179,8 @@
     return result;
   }
 
-  public void addRevision(CDORevision revision)
+  @Override
+  protected void doAddRevision(CDORevision revision)
   {
     CheckUtil.checkArg(revision, "revision");
     checkBranch(revision.getBranch());
@@ -208,7 +209,8 @@
     }
   }
 
-  public InternalCDORevision removeRevision(CDOID id, CDOBranchVersion branchVersion)
+  @Override
+  protected InternalCDORevision doRemoveRevision(CDOID id, CDOBranchVersion branchVersion)
   {
     checkBranch(branchVersion.getBranch());
     synchronized (revisions)
diff --git a/plugins/org.eclipse.emf.cdo.examples/META-INF/MANIFEST.MF b/plugins/org.eclipse.emf.cdo.examples/META-INF/MANIFEST.MF
index b372da0..1e95923 100644
--- a/plugins/org.eclipse.emf.cdo.examples/META-INF/MANIFEST.MF
+++ b/plugins/org.eclipse.emf.cdo.examples/META-INF/MANIFEST.MF
@@ -1,7 +1,7 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-SymbolicName: org.eclipse.emf.cdo.examples;singleton:=true
-Bundle-Version: 4.0.400.qualifier
+Bundle-Version: 4.0.500.qualifier
 Bundle-Name: %pluginName
 Bundle-Vendor: %providerName
 Bundle-Activator: org.eclipse.emf.cdo.internal.examples.bundle.OM$Activator
@@ -20,7 +20,7 @@
  org.eclipse.net4j.tcp;bundle-version="[4.0.0,5.0.0)",
  org.eclipse.net4j.db.h2;bundle-version="[4.0.0,5.0.0)"
 Import-Package: org.h2.jdbcx;version="[1.0.0,2.0.0)"
-Export-Package: org.eclipse.emf.cdo.examples;version="4.0.400";x-internal:=true,
- org.eclipse.emf.cdo.examples.server;version="4.0.400";x-internal:=true,
- org.eclipse.emf.cdo.examples.server.offline;version="4.0.400";x-internal:=true,
- org.eclipse.emf.cdo.internal.examples.bundle;version="4.0.400";x-internal:=true
+Export-Package: org.eclipse.emf.cdo.examples;version="4.0.500";x-internal:=true,
+ org.eclipse.emf.cdo.examples.server;version="4.0.500";x-internal:=true,
+ org.eclipse.emf.cdo.examples.server.offline;version="4.0.500";x-internal:=true,
+ org.eclipse.emf.cdo.internal.examples.bundle;version="4.0.500";x-internal:=true
diff --git a/plugins/org.eclipse.emf.cdo.examples/src/org/eclipse/emf/cdo/examples/StandaloneManualExample.java b/plugins/org.eclipse.emf.cdo.examples/src/org/eclipse/emf/cdo/examples/StandaloneManualExample.java
index 01915f9..1ec52e6 100644
--- a/plugins/org.eclipse.emf.cdo.examples/src/org/eclipse/emf/cdo/examples/StandaloneManualExample.java
+++ b/plugins/org.eclipse.emf.cdo.examples/src/org/eclipse/emf/cdo/examples/StandaloneManualExample.java
@@ -23,6 +23,7 @@
 import org.eclipse.net4j.Net4jUtil;
 import org.eclipse.net4j.buffer.IBufferProvider;
 import org.eclipse.net4j.protocol.IProtocolProvider;
+import org.eclipse.net4j.util.concurrent.ThreadPool;
 import org.eclipse.net4j.util.lifecycle.LifecycleUtil;
 import org.eclipse.net4j.util.om.OMPlatform;
 import org.eclipse.net4j.util.om.log.PrintLogHandler;
@@ -31,8 +32,6 @@
 import org.eclipse.emf.ecore.EObject;
 
 import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.ThreadFactory;
 
 /**
  * @author Eike Stepper
@@ -47,16 +46,7 @@
     OMPlatform.INSTANCE.addTraceHandler(PrintTraceHandler.CONSOLE);
 
     // Prepare receiveExecutor
-    final ThreadGroup threadGroup = new ThreadGroup("net4j"); //$NON-NLS-1$
-    ExecutorService receiveExecutor = Executors.newCachedThreadPool(new ThreadFactory()
-    {
-      public Thread newThread(Runnable r)
-      {
-        Thread thread = new Thread(threadGroup, r);
-        thread.setDaemon(true);
-        return thread;
-      }
-    });
+    ExecutorService receiveExecutor = ThreadPool.create();
 
     // Prepare bufferProvider
     IBufferProvider bufferProvider = Net4jUtil.createBufferPool();
diff --git a/plugins/org.eclipse.emf.cdo.server.net4j/src/org/eclipse/emf/cdo/server/internal/net4j/protocol/CommitTransactionIndication.java b/plugins/org.eclipse.emf.cdo.server.net4j/src/org/eclipse/emf/cdo/server/internal/net4j/protocol/CommitTransactionIndication.java
index 0a15407..83e84b5 100644
--- a/plugins/org.eclipse.emf.cdo.server.net4j/src/org/eclipse/emf/cdo/server/internal/net4j/protocol/CommitTransactionIndication.java
+++ b/plugins/org.eclipse.emf.cdo.server.net4j/src/org/eclipse/emf/cdo/server/internal/net4j/protocol/CommitTransactionIndication.java
@@ -85,14 +85,10 @@
     return commitContext.getPackageRegistry();
   }
 
-  @Override
-  protected void indicatingFailed()
+  protected void initializeCommitContext(CDODataInput in) throws Exception
   {
-    if (commitContext != null)
-    {
-      commitContext.postCommit(false);
-      commitContext = null;
-    }
+    int viewID = in.readInt();
+    commitContext = getTransaction(viewID).createCommitContext();
   }
 
   @Override
@@ -101,8 +97,8 @@
     try
     {
       monitor.begin(OMMonitor.TEN);
-      indicatingCommit(in, monitor.fork(OMMonitor.ONE));
-      indicatingCommit(monitor.fork(OMMonitor.TEN - OMMonitor.ONE));
+      indicatingRead(in, monitor.fork(OMMonitor.ONE));
+      indicatingCommit(in, monitor.fork(OMMonitor.TEN - OMMonitor.ONE));
     }
     catch (IOException ex)
     {
@@ -119,7 +115,7 @@
     }
   }
 
-  protected void indicatingCommit(CDODataInput in, OMMonitor monitor) throws Exception
+  protected void indicatingRead(CDODataInput in, OMMonitor monitor) throws Exception
   {
     // Create commit context
     initializeCommitContext(in);
@@ -292,35 +288,22 @@
     }
   }
 
-  private ResourceSet createResourceSet(InternalCDOPackageRegistry packageRegistry)
-  {
-    ResourceSet resourceSet = new ResourceSetImpl()
-    {
-      @Override
-      protected void demandLoad(Resource resource) throws IOException
-      {
-        // Do nothing: we don't want this ResourceSet to attempt demand-loads.
-      }
-    };
-
-    Resource.Factory resourceFactory = new EcoreResourceFactoryImpl();
-    resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put("*", resourceFactory); //$NON-NLS-1$
-    resourceSet.setPackageRegistry(packageRegistry);
-    return resourceSet;
-  }
-
-  protected void initializeCommitContext(CDODataInput in) throws Exception
-  {
-    int viewID = in.readInt();
-    commitContext = getTransaction(viewID).createCommitContext();
-  }
-
-  protected void indicatingCommit(OMMonitor monitor)
+  protected void indicatingCommit(CDODataInput in, OMMonitor monitor)
   {
     getRepository().commit(commitContext, monitor);
   }
 
   @Override
+  protected void indicatingFailed()
+  {
+    if (commitContext != null)
+    {
+      commitContext.postCommit(false);
+      commitContext = null;
+    }
+  }
+
+  @Override
   protected void responding(CDODataOutput out, OMMonitor monitor) throws Exception
   {
     boolean success = false;
@@ -466,4 +449,21 @@
 
     throw new IllegalStateException("Illegal transaction: " + view); //$NON-NLS-1$
   }
+
+  private ResourceSet createResourceSet(InternalCDOPackageRegistry packageRegistry)
+  {
+    ResourceSet resourceSet = new ResourceSetImpl()
+    {
+      @Override
+      protected void demandLoad(Resource resource) throws IOException
+      {
+        // Do nothing: we don't want this ResourceSet to attempt demand-loads.
+      }
+    };
+
+    Resource.Factory resourceFactory = new EcoreResourceFactoryImpl();
+    resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put("*", resourceFactory); //$NON-NLS-1$
+    resourceSet.setPackageRegistry(packageRegistry);
+    return resourceSet;
+  }
 }
diff --git a/plugins/org.eclipse.emf.cdo.server.net4j/src/org/eclipse/emf/cdo/server/internal/net4j/protocol/CommitXATransactionPhase1Indication.java b/plugins/org.eclipse.emf.cdo.server.net4j/src/org/eclipse/emf/cdo/server/internal/net4j/protocol/CommitXATransactionPhase1Indication.java
index f70b26c..409eac0 100644
--- a/plugins/org.eclipse.emf.cdo.server.net4j/src/org/eclipse/emf/cdo/server/internal/net4j/protocol/CommitXATransactionPhase1Indication.java
+++ b/plugins/org.eclipse.emf.cdo.server.net4j/src/org/eclipse/emf/cdo/server/internal/net4j/protocol/CommitXATransactionPhase1Indication.java
@@ -30,10 +30,17 @@
   }
 
   @Override
-  protected void indicatingCommit(OMMonitor monitor)
+  protected boolean closeInputStreamAfterMe()
+  {
+    // The commit manager processes phase1 asynchronously, so don't close the input stream on him.
+    return false;
+  }
+
+  @Override
+  protected void indicatingCommit(CDODataInput in, OMMonitor monitor)
   {
     // Register transactionContext
-    getRepository().getCommitManager().preCommit(commitContext, monitor);
+    getRepository().getCommitManager().preCommit(commitContext, in, monitor);
   }
 
   @Override
diff --git a/plugins/org.eclipse.emf.cdo.server.security/META-INF/MANIFEST.MF b/plugins/org.eclipse.emf.cdo.server.security/META-INF/MANIFEST.MF
index 04d3066..b4daf94 100644
--- a/plugins/org.eclipse.emf.cdo.server.security/META-INF/MANIFEST.MF
+++ b/plugins/org.eclipse.emf.cdo.server.security/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@
 Bundle-ManifestVersion: 2
 Bundle-SymbolicName: org.eclipse.emf.cdo.server.security;singleton:=true
 Bundle-Name: %pluginName
-Bundle-Version: 4.3.100.qualifier
+Bundle-Version: 4.3.200.qualifier
 Bundle-ClassPath: .
 Bundle-Vendor: %providerName
 Bundle-Localization: plugin
@@ -12,15 +12,15 @@
  org.eclipse.emf.cdo.security;bundle-version="[4.1.0,5.0.0)",
  org.eclipse.emf.cdo.net4j;bundle-version="[4.1.0,5.0.0)",
  org.eclipse.net4j.jvm;bundle-version="[4.1.0,5.0.0)"
-Export-Package: org.eclipse.emf.cdo.server.internal.security;version="4.3.100";
+Export-Package: org.eclipse.emf.cdo.server.internal.security;version="4.3.200";
   x-friends:="org.eclipse.emf.cdo.tests,
    org.eclipse.emf.cdo.tests.db,
    org.eclipse.emf.cdo.tests.db4o,
    org.eclipse.emf.cdo.tests.hibernate,
    org.eclipse.emf.cdo.tests.mongodb,
    org.eclipse.emf.cdo.tests.objectivity",
- org.eclipse.emf.cdo.server.internal.security.bundle;version="4.3.100";x-internal:=true,
- org.eclipse.emf.cdo.server.security;version="4.3.100",
- org.eclipse.emf.cdo.server.spi.security;version="4.3.100"
+ org.eclipse.emf.cdo.server.internal.security.bundle;version="4.3.200";x-internal:=true,
+ org.eclipse.emf.cdo.server.security;version="4.3.200",
+ org.eclipse.emf.cdo.server.spi.security;version="4.3.200"
 Bundle-ActivationPolicy: lazy
 Bundle-Activator: org.eclipse.emf.cdo.server.internal.security.bundle.OM$Activator
diff --git a/plugins/org.eclipse.emf.cdo.server.security/src/org/eclipse/emf/cdo/server/spi/security/HomeFolderHandler.java b/plugins/org.eclipse.emf.cdo.server.security/src/org/eclipse/emf/cdo/server/spi/security/HomeFolderHandler.java
index 09738b6..f2a9651 100644
--- a/plugins/org.eclipse.emf.cdo.server.security/src/org/eclipse/emf/cdo/server/spi/security/HomeFolderHandler.java
+++ b/plugins/org.eclipse.emf.cdo.server.security/src/org/eclipse/emf/cdo/server/spi/security/HomeFolderHandler.java
@@ -26,6 +26,7 @@
 import org.eclipse.emf.cdo.view.CDOView;
 
 import org.eclipse.net4j.util.concurrent.ExecutorServiceFactory;
+import org.eclipse.net4j.util.concurrent.IExecutorServiceProvider;
 import org.eclipse.net4j.util.container.IManagedContainer;
 import org.eclipse.net4j.util.container.IManagedContainer.ContainerAware;
 import org.eclipse.net4j.util.factory.ProductCreationException;
@@ -43,7 +44,7 @@
  * @author Eike Stepper
  * @since 4.3
  */
-public class HomeFolderHandler implements InternalSecurityManager.CommitHandler2
+public class HomeFolderHandler implements InternalSecurityManager.CommitHandler2, IExecutorServiceProvider
 {
   public static final String DEFAULT_HOME_FOLDER = "/home";
 
diff --git a/plugins/org.eclipse.emf.cdo.server/src/org/eclipse/emf/cdo/internal/server/CommitManager.java b/plugins/org.eclipse.emf.cdo.server/src/org/eclipse/emf/cdo/internal/server/CommitManager.java
index c7d88e3..51511df 100644
--- a/plugins/org.eclipse.emf.cdo.server/src/org/eclipse/emf/cdo/internal/server/CommitManager.java
+++ b/plugins/org.eclipse.emf.cdo.server/src/org/eclipse/emf/cdo/internal/server/CommitManager.java
@@ -11,21 +11,25 @@
  */
 package org.eclipse.emf.cdo.internal.server;
 
+import org.eclipse.emf.cdo.common.protocol.CDODataInput;
 import org.eclipse.emf.cdo.spi.server.InternalCommitContext;
 import org.eclipse.emf.cdo.spi.server.InternalCommitManager;
 import org.eclipse.emf.cdo.spi.server.InternalRepository;
 import org.eclipse.emf.cdo.spi.server.InternalTransaction;
 
 import org.eclipse.net4j.util.ReflectUtil.ExcludeFromDump;
+import org.eclipse.net4j.util.concurrent.ConcurrencyUtil;
+import org.eclipse.net4j.util.concurrent.ThreadPool;
+import org.eclipse.net4j.util.io.IOUtil;
 import org.eclipse.net4j.util.lifecycle.Lifecycle;
 import org.eclipse.net4j.util.om.monitor.OMMonitor;
 
+import java.io.Closeable;
 import java.util.Map;
 import java.util.concurrent.Callable;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
 
 /**
@@ -62,8 +66,13 @@
   {
     if (executors == null)
     {
-      shutdownExecutorService = true;
-      executors = Executors.newFixedThreadPool(10);
+      executors = ConcurrencyUtil.getExecutorService(repository);
+
+      if (executors == null)
+      {
+        shutdownExecutorService = true;
+        executors = ThreadPool.create();
+      }
     }
 
     return executors;
@@ -73,7 +82,11 @@
   {
     if (shutdownExecutorService)
     {
-      this.executors.shutdown();
+      if (this.executors != null)
+      {
+        this.executors.shutdown();
+      }
+
       shutdownExecutorService = false;
     }
 
@@ -87,12 +100,15 @@
     setExecutors(null);
   }
 
-  /**
-   * Create a future to execute commitContext in a different thread.
-   */
+  @Deprecated
   public void preCommit(InternalCommitContext commitContext, OMMonitor monitor)
   {
-    TransactionCommitContextEntry contextEntry = new TransactionCommitContextEntry(monitor);
+    preCommit(commitContext, null, monitor);
+  }
+
+  public void preCommit(InternalCommitContext commitContext, CDODataInput in, OMMonitor monitor)
+  {
+    TransactionCommitContextEntry contextEntry = new TransactionCommitContextEntry(in, monitor);
     contextEntry.setContext(commitContext);
 
     Future<Object> future = getExecutors().submit(contextEntry.createCallable());
@@ -145,14 +161,17 @@
    */
   private static final class TransactionCommitContextEntry
   {
+    private final CDODataInput in;
+
+    private final OMMonitor monitor;
+
     private InternalCommitContext context;
 
     private Future<Object> future;
 
-    private OMMonitor monitor;
-
-    public TransactionCommitContextEntry(OMMonitor monitor)
+    public TransactionCommitContextEntry(CDODataInput in, OMMonitor monitor)
     {
+      this.in = in;
       this.monitor = monitor;
     }
 
@@ -163,6 +182,12 @@
         public Object call() throws Exception
         {
           context.write(monitor);
+
+          if (in instanceof Closeable)
+          {
+            IOUtil.closeSilent((Closeable)in);
+          }
+
           return null;
         }
       };
diff --git a/plugins/org.eclipse.emf.cdo.server/src/org/eclipse/emf/cdo/internal/server/QueryManager.java b/plugins/org.eclipse.emf.cdo.server/src/org/eclipse/emf/cdo/internal/server/QueryManager.java
index 00a34fb..42fa968 100644
--- a/plugins/org.eclipse.emf.cdo.server/src/org/eclipse/emf/cdo/internal/server/QueryManager.java
+++ b/plugins/org.eclipse.emf.cdo.server/src/org/eclipse/emf/cdo/internal/server/QueryManager.java
@@ -28,6 +28,8 @@
 import org.eclipse.emf.cdo.spi.server.InternalSession;
 import org.eclipse.emf.cdo.spi.server.InternalView;
 
+import org.eclipse.net4j.util.concurrent.ConcurrencyUtil;
+import org.eclipse.net4j.util.concurrent.ThreadPool;
 import org.eclipse.net4j.util.container.IContainerDelta.Kind;
 import org.eclipse.net4j.util.container.SingleDeltaContainerEvent;
 import org.eclipse.net4j.util.event.IEvent;
@@ -38,7 +40,6 @@
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
 
 /**
@@ -85,8 +86,13 @@
   {
     if (executors == null)
     {
-      shutdownExecutorService = true;
-      executors = Executors.newFixedThreadPool(10);
+      executors = ConcurrencyUtil.getExecutorService(repository);
+
+      if (executors == null)
+      {
+        shutdownExecutorService = true;
+        executors = ThreadPool.create();
+      }
     }
 
     return executors;
@@ -96,7 +102,11 @@
   {
     if (shutdownExecutorService)
     {
-      this.executors.shutdown();
+      if (this.executors != null)
+      {
+        this.executors.shutdown();
+      }
+
       shutdownExecutorService = false;
     }
 
diff --git a/plugins/org.eclipse.emf.cdo.server/src/org/eclipse/emf/cdo/internal/server/Repository.java b/plugins/org.eclipse.emf.cdo.server/src/org/eclipse/emf/cdo/internal/server/Repository.java
index 338e9de..25ede60 100644
--- a/plugins/org.eclipse.emf.cdo.server/src/org/eclipse/emf/cdo/internal/server/Repository.java
+++ b/plugins/org.eclipse.emf.cdo.server/src/org/eclipse/emf/cdo/internal/server/Repository.java
@@ -104,6 +104,8 @@
 import org.eclipse.net4j.util.WrappedException;
 import org.eclipse.net4j.util.collection.MoveableList;
 import org.eclipse.net4j.util.collection.Pair;
+import org.eclipse.net4j.util.concurrent.ConcurrencyUtil;
+import org.eclipse.net4j.util.concurrent.IExecutorServiceProvider;
 import org.eclipse.net4j.util.concurrent.IRWLockManager.LockType;
 import org.eclipse.net4j.util.concurrent.RWOLockManager.LockState;
 import org.eclipse.net4j.util.concurrent.TimeoutRuntimeException;
@@ -138,13 +140,14 @@
 import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
+import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Semaphore;
 
 /**
  * @author Eike Stepper
  * @since 2.0
  */
-public class Repository extends Container<Object>implements InternalRepository
+public class Repository extends Container<Object>implements InternalRepository, IExecutorServiceProvider
 {
   private static final int UNCHUNKED = CDORevision.UNCHUNKED;
 
@@ -1248,7 +1251,8 @@
 
     if (queryHandlerProvider == null)
     {
-      queryHandlerProvider = new ContainerQueryHandlerProvider(getContainer());
+      IManagedContainer container = getContainer();
+      queryHandlerProvider = new ContainerQueryHandlerProvider(container);
     }
 
     IQueryHandler handler = queryHandlerProvider.getQueryHandler(info);
@@ -1275,6 +1279,12 @@
     this.container = container;
   }
 
+  public ExecutorService getExecutorService()
+  {
+    IManagedContainer container = getContainer();
+    return ConcurrencyUtil.getExecutorService(container);
+  }
+
   public Object[] getElements()
   {
     final Object[] elements = { packageRegistry, branchManager, revisionManager, sessionManager, queryManager,
diff --git a/plugins/org.eclipse.emf.cdo.server/src/org/eclipse/emf/cdo/spi/server/InternalCommitManager.java b/plugins/org.eclipse.emf.cdo.server/src/org/eclipse/emf/cdo/spi/server/InternalCommitManager.java
index 37ea093..d5c072c 100644
--- a/plugins/org.eclipse.emf.cdo.server/src/org/eclipse/emf/cdo/spi/server/InternalCommitManager.java
+++ b/plugins/org.eclipse.emf.cdo.server/src/org/eclipse/emf/cdo/spi/server/InternalCommitManager.java
@@ -10,6 +10,8 @@
  */
 package org.eclipse.emf.cdo.spi.server;
 
+import org.eclipse.emf.cdo.common.protocol.CDODataInput;
+
 import org.eclipse.net4j.util.om.monitor.OMMonitor;
 
 import java.util.concurrent.ExecutionException;
@@ -30,10 +32,19 @@
 
   /**
    * Create a future to execute commitContext in a different thread.
+   *
+   * @deprecated As of 4.5 use {@link #preCommit(InternalCommitContext, CDODataInput, OMMonitor)}.
    */
+  @Deprecated
   public void preCommit(InternalCommitContext commitContext, OMMonitor monitor);
 
   /**
+   * Create a future to execute commitContext in a different thread.
+   * @since 4.5
+   */
+  public void preCommit(InternalCommitContext commitContext, CDODataInput in, OMMonitor monitor);
+
+  /**
    * Called after a commitContext is done successfully or not.
    */
   public void remove(InternalCommitContext commitContext);
diff --git a/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/LockingManagerTest.java b/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/LockingManagerTest.java
index 199c922..0746b51 100644
--- a/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/LockingManagerTest.java
+++ b/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/LockingManagerTest.java
@@ -42,7 +42,6 @@
 import java.util.List;
 import java.util.Set;
 import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
 import java.util.concurrent.TimeUnit;
 
 import junit.framework.AssertionFailedError;
@@ -184,7 +183,7 @@
       }
     };
 
-    ExecutorService executors = Executors.newFixedThreadPool(10);
+    ExecutorService executors = getExecutorService();
     Set<Integer> keys = new HashSet<Integer>();
     keys.add(1);
     keys.add(2);
diff --git a/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/Config.java b/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/Config.java
index ae59a32..699e2d2 100644
--- a/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/Config.java
+++ b/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/Config.java
@@ -13,9 +13,11 @@
 import org.eclipse.emf.cdo.tests.config.IConfig;
 
 import org.eclipse.net4j.util.ObjectUtil;
+import org.eclipse.net4j.util.concurrent.ThreadPool;
 
 import java.util.Map;
 import java.util.Set;
+import java.util.concurrent.ExecutorService;
 
 /**
  * @author Eike Stepper
@@ -24,6 +26,8 @@
 {
   private static final long serialVersionUID = 1L;
 
+  protected static ExecutorService executorService = ThreadPool.create("test", 20, 100, 30);
+
   private String name;
 
   private transient ConfigTest currentTest;
@@ -109,4 +113,9 @@
   public void tearDown() throws Exception
   {
   }
+
+  public static ExecutorService getExecutorService()
+  {
+    return executorService;
+  }
 }
diff --git a/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/ConfigTest.java b/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/ConfigTest.java
index d56556a..0b8541d 100644
--- a/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/ConfigTest.java
+++ b/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/ConfigTest.java
@@ -78,6 +78,7 @@
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Properties;
+import java.util.concurrent.ExecutorService;
 
 import junit.framework.TestResult;
 
@@ -100,6 +101,11 @@
   {
   }
 
+  public ExecutorService getExecutorService()
+  {
+    return Config.getExecutorService();
+  }
+
   public synchronized IScenario getScenario()
   {
     if (scenario == null)
@@ -574,8 +580,8 @@
   @Override
   public String toString()
   {
-    return MessageFormat.format("{0}.{1} [{2}, {3}, {4}]", getClass().getSimpleName(), getName(),
-        getRepositoryConfig(), getSessionConfig(), getModelConfig());
+    return MessageFormat.format("{0}.{1} [{2}, {3}, {4}]", getClass().getSimpleName(), getName(), getRepositoryConfig(),
+        getSessionConfig(), getModelConfig());
   }
 
   @Override
@@ -861,7 +867,7 @@
   @Target({ ElementType.TYPE, ElementType.METHOD })
   public @interface Requires
   {
-    String[] value();
+    String[]value();
   }
 
   @Inherited
@@ -869,6 +875,6 @@
   @Target({ ElementType.TYPE, ElementType.METHOD })
   public @interface Skips
   {
-    String[] value();
+    String[]value();
   }
 }
diff --git a/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/ConfigTestSuite.java b/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/ConfigTestSuite.java
index d69d5f5..5b89641 100644
--- a/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/ConfigTestSuite.java
+++ b/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/ConfigTestSuite.java
@@ -71,7 +71,7 @@
       {
         try
         {
-          TestWrapper wrapper = new TestWrapper(testClass, scenario, this);
+          ScenarioSuite wrapper = new ScenarioSuite(testClass, scenario, this);
           if (wrapper.testCount() != 0)
           {
             suite.addTest(wrapper);
@@ -152,36 +152,28 @@
   /**
    * @author Eike Stepper
    */
-  private static final class ConstraintsViolatedException extends Exception
-  {
-    private static final long serialVersionUID = 1L;
-  }
-
-  /**
-   * @author Eike Stepper
-   */
-  private static final class TestWrapper extends TestSuite
+  private static final class ScenarioSuite extends TestSuite
   {
     private IScenario scenario;
-
-    public TestWrapper(Class<? extends ConfigTest> testClass, IScenario scenario, ConfigTestSuite suite)
+  
+    public ScenarioSuite(Class<? extends ConfigTest> testClass, IScenario scenario, ConfigTestSuite suite)
         throws ConstraintsViolatedException
     {
       // super(testClass, testClass.getName()); // Important for the UI to set the *qualified* class name!
       this.scenario = scenario;
       addTestsFromTestCase(testClass, suite);
     }
-
+  
     @Override
     public void runTest(Test test, TestResult result)
     {
       if (test instanceof ConfigTest)
       {
         scenario.save();
-
+  
         ConfigTest configTest = (ConfigTest)test;
         configTest.setScenario(scenario);
-
+  
         if (configTest.isValid())
         {
           super.runTest(configTest, result);
@@ -192,12 +184,12 @@
         super.runTest(test, result);
       }
     }
-
+  
     private void addTestsFromTestCase(final Class<?> theClass, ConfigTestSuite suite)
         throws ConstraintsViolatedException
     {
       setName(theClass.getName());
-
+  
       try
       {
         getTestConstructor(theClass); // Avoid generating multiple error messages
@@ -208,15 +200,15 @@
             + " has no public constructor TestCase(String name) or TestCase()"));
         return;
       }
-
+  
       if (!Modifier.isPublic(theClass.getModifiers()))
       {
         addTest(warning("Class " + theClass.getName() + " is not public"));
         return;
       }
-
+  
       Set<String> capabilities = scenario.getCapabilities();
-
+  
       Class<?> superClass = theClass;
       while (Test.class.isAssignableFrom(superClass))
       {
@@ -224,12 +216,12 @@
         {
           throw new ConstraintsViolatedException();
         }
-
+  
         superClass = superClass.getSuperclass();
       }
-
+  
       List<String> names = new ArrayList<String>();
-
+  
       superClass = theClass;
       while (Test.class.isAssignableFrom(superClass))
       {
@@ -240,11 +232,11 @@
             addTestMethod(method, names, theClass, suite);
           }
         }
-
+  
         superClass = superClass.getSuperclass();
       }
     }
-
+  
     private boolean validateConstraints(AnnotatedElement element, Set<String> capabilities)
     {
       Requires requires = element.getAnnotation(Requires.class);
@@ -258,7 +250,7 @@
           }
         }
       }
-
+  
       Skips skips = element.getAnnotation(Skips.class);
       if (skips != null)
       {
@@ -270,10 +262,10 @@
           }
         }
       }
-
+  
       return true;
     }
-
+  
     private void addTestMethod(Method m, List<String> names, Class<?> theClass, ConfigTestSuite suite)
     {
       String name = m.getName();
@@ -281,17 +273,17 @@
       {
         return;
       }
-
+  
       if (!isPublicTestMethod(m))
       {
         if (isTestMethod(m))
         {
           addTest(warning("Test method isn't public: " + m.getName() + "(" + theClass.getCanonicalName() + ")"));
         }
-
+  
         return;
       }
-
+  
       names.add(name);
       Test test = createTest(theClass, name);
       if (test instanceof ConfigTest)
@@ -299,18 +291,26 @@
         ConfigTest configTest = (ConfigTest)test;
         suite.prepareTest(configTest);
       }
-
+  
       addTest(test);
     }
-
+  
     private boolean isPublicTestMethod(Method m)
     {
       return isTestMethod(m) && Modifier.isPublic(m.getModifiers());
     }
-
+  
     private boolean isTestMethod(Method m)
     {
       return m.getParameterTypes().length == 0 && m.getName().startsWith("test") && m.getReturnType().equals(Void.TYPE);
     }
   }
+
+  /**
+   * @author Eike Stepper
+   */
+  private static final class ConstraintsViolatedException extends Exception
+  {
+    private static final long serialVersionUID = 1L;
+  }
 }
diff --git a/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/RepositoryConfig.java b/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/RepositoryConfig.java
index 76a9ff1..d3e8aeb 100644
--- a/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/RepositoryConfig.java
+++ b/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/RepositoryConfig.java
@@ -64,6 +64,8 @@
 import org.eclipse.net4j.util.ObjectUtil;
 import org.eclipse.net4j.util.ReflectUtil;
 import org.eclipse.net4j.util.concurrent.ConcurrencyUtil;
+import org.eclipse.net4j.util.concurrent.DelegatingExecutorService;
+import org.eclipse.net4j.util.concurrent.ExecutorServiceFactory;
 import org.eclipse.net4j.util.container.ContainerUtil;
 import org.eclipse.net4j.util.container.IManagedContainer;
 import org.eclipse.net4j.util.event.IEvent;
@@ -92,6 +94,7 @@
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
+import java.util.concurrent.ExecutorService;
 
 /**
  * @author Eike Stepper
@@ -242,6 +245,16 @@
     IManagedContainer container = ContainerUtil.createContainer();
     Net4jUtil.prepareContainer(container);
     CDONet4jServerUtil.prepareContainer(container);
+
+    container.registerFactory(new ExecutorServiceFactory()
+    {
+      @Override
+      public ExecutorService create(String threadGroupName)
+      {
+        return new DelegatingExecutorService(executorService);
+      }
+    });
+
     return container;
   }
 
@@ -533,8 +546,8 @@
               if (!path.startsWith(prefix) && !hasAnnotation(CleanRepositoriesBefore.class))
               {
                 throw new RuntimeException("Test case " + test.getClass().getName() + '.' + test.getName()
-                + " does not use getResourcePath() for resource " + path + ", nor does it declare @"
-                + CleanRepositoriesBefore.class.getSimpleName());
+                    + " does not use getResourcePath() for resource " + path + ", nor does it declare @"
+                    + CleanRepositoriesBefore.class.getSimpleName());
               }
             }
           }
diff --git a/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/SessionConfig.java b/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/SessionConfig.java
index 8cb638e..4f3ed8b 100644
--- a/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/SessionConfig.java
+++ b/plugins/org.eclipse.emf.cdo.tests/src/org/eclipse/emf/cdo/tests/config/impl/SessionConfig.java
@@ -32,6 +32,8 @@
 import org.eclipse.net4j.jvm.JVMUtil;
 import org.eclipse.net4j.tcp.TCPUtil;
 import org.eclipse.net4j.tcp.ssl.SSLUtil;
+import org.eclipse.net4j.util.concurrent.DelegatingExecutorService;
+import org.eclipse.net4j.util.concurrent.ExecutorServiceFactory;
 import org.eclipse.net4j.util.container.ContainerUtil;
 import org.eclipse.net4j.util.container.IManagedContainer;
 import org.eclipse.net4j.util.event.IListener;
@@ -42,13 +44,13 @@
 import org.eclipse.net4j.util.security.IPasswordCredentialsProvider;
 
 import org.eclipse.emf.ecore.EPackage;
-import org.eclipse.emf.ecore.EPackage.Registry;
 import org.eclipse.emf.ecore.impl.EPackageImpl;
 
 import java.io.File;
 import java.util.Date;
 import java.util.HashSet;
 import java.util.Set;
+import java.util.concurrent.ExecutorService;
 
 /**
  * @author Eike Stepper
@@ -61,7 +63,7 @@
 
   public static final String PROP_TEST_FETCH_RULE_MANAGER = "test.session.FetchRuleManager";
 
-  private static final Registry GLOBAL_REGISTRY = EPackage.Registry.INSTANCE;
+  private static final EPackage.Registry GLOBAL_REGISTRY = EPackage.Registry.INSTANCE;
 
   private static final long serialVersionUID = 1L;
 
@@ -123,6 +125,16 @@
   {
     IManagedContainer container = ContainerUtil.createContainer();
     Net4jUtil.prepareContainer(container);
+
+    container.registerFactory(new ExecutorServiceFactory()
+    {
+      @Override
+      public ExecutorService create(String threadGroupName)
+      {
+        return new DelegatingExecutorService(executorService);
+      }
+    });
+
     return container;
   }
 
diff --git a/plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/internal/cdo/session/CDOSessionImpl.java b/plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/internal/cdo/session/CDOSessionImpl.java
index 9062449..4e992c1 100644
--- a/plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/internal/cdo/session/CDOSessionImpl.java
+++ b/plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/internal/cdo/session/CDOSessionImpl.java
@@ -96,10 +96,12 @@
 import org.eclipse.net4j.util.AdapterUtil;
 import org.eclipse.net4j.util.ReflectUtil.ExcludeFromDump;
 import org.eclipse.net4j.util.WrappedException;
+import org.eclipse.net4j.util.concurrent.ConcurrencyUtil;
+import org.eclipse.net4j.util.concurrent.ExecutorWorkSerializer;
+import org.eclipse.net4j.util.concurrent.IExecutorServiceProvider;
 import org.eclipse.net4j.util.concurrent.IRWLockManager;
 import org.eclipse.net4j.util.concurrent.IRWLockManager.LockType;
 import org.eclipse.net4j.util.concurrent.IRWOLockManager;
-import org.eclipse.net4j.util.concurrent.QueueRunner2;
 import org.eclipse.net4j.util.concurrent.RWOLockManager;
 import org.eclipse.net4j.util.event.Event;
 import org.eclipse.net4j.util.event.EventUtil;
@@ -149,11 +151,13 @@
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
+import java.util.concurrent.ExecutorService;
 
 /**
  * @author Eike Stepper
  */
-public abstract class CDOSessionImpl extends CDOTransactionContainerImpl implements InternalCDOSession
+public abstract class CDOSessionImpl extends CDOTransactionContainerImpl
+    implements InternalCDOSession, IExecutorServiceProvider
 {
   private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_SESSION, CDOSessionImpl.class);
 
@@ -363,6 +367,11 @@
     return fetchRuleManager;
   }
 
+  public ExecutorService getExecutorService()
+  {
+    return ConcurrencyUtil.getExecutorService(sessionProtocol);
+  }
+
   /**
    * @since 3.0
    */
@@ -1308,6 +1317,9 @@
   protected void doAfterActivate() throws Exception
   {
     super.doAfterActivate();
+
+    ExecutorService executorService = ConcurrencyUtil.getExecutorService(sessionProtocol);
+    invalidator.setExecutor(executorService);
     LifecycleUtil.activate(invalidator);
   }
 
@@ -1738,7 +1750,7 @@
   /**
    * @author Eike Stepper
    */
-  private class Invalidator extends QueueRunner2<Invalidation>
+  private class Invalidator extends ExecutorWorkSerializer
   {
     private static final boolean DEBUG = false;
 
@@ -1820,11 +1832,11 @@
     }
 
     @Override
-    protected void noWork(WorkContext context)
+    protected void noWork()
     {
       if (isClosed() && terminateIfSessionClosed)
       {
-        context.terminate();
+        dispose();
       }
     }
 
@@ -1834,12 +1846,6 @@
       super.doAfterActivate();
       terminateIfSessionClosed = true;
     }
-
-    @Override
-    protected String getThreadName()
-    {
-      return "CDOSessionInvalidator-" + CDOSessionImpl.this;
-    }
   }
 
   /**
diff --git a/plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/internal/cdo/session/DelegatingSessionProtocol.java b/plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/internal/cdo/session/DelegatingSessionProtocol.java
index f271273..7170fae 100644
--- a/plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/internal/cdo/session/DelegatingSessionProtocol.java
+++ b/plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/internal/cdo/session/DelegatingSessionProtocol.java
@@ -47,6 +47,8 @@
 import org.eclipse.net4j.util.ReflectUtil.ExcludeFromDump;
 import org.eclipse.net4j.util.WrappedException;
 import org.eclipse.net4j.util.collection.Pair;
+import org.eclipse.net4j.util.concurrent.ConcurrencyUtil;
+import org.eclipse.net4j.util.concurrent.IExecutorServiceProvider;
 import org.eclipse.net4j.util.concurrent.IRWLockManager.LockType;
 import org.eclipse.net4j.util.event.EventUtil;
 import org.eclipse.net4j.util.event.IListener;
@@ -70,11 +72,12 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import java.util.concurrent.ExecutorService;
 
 /**
  * @author Eike Stepper
  */
-public class DelegatingSessionProtocol extends Lifecycle implements CDOSessionProtocol
+public class DelegatingSessionProtocol extends Lifecycle implements CDOSessionProtocol, IExecutorServiceProvider
 {
   private CDOSessionProtocol delegate;
 
@@ -122,6 +125,11 @@
     return (CDOSession)delegate.getSession();
   }
 
+  public ExecutorService getExecutorService()
+  {
+    return ConcurrencyUtil.getExecutorService(delegate);
+  }
+
   public boolean cancelQuery(int queryId)
   {
     int attempt = 0;
diff --git a/plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/internal/cdo/view/CDOViewImpl.java b/plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/internal/cdo/view/CDOViewImpl.java
index 8b6cd1c..1a28863 100644
--- a/plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/internal/cdo/view/CDOViewImpl.java
+++ b/plugins/org.eclipse.emf.cdo/src/org/eclipse/emf/internal/cdo/view/CDOViewImpl.java
@@ -67,8 +67,11 @@
 import org.eclipse.net4j.util.WrappedException;
 import org.eclipse.net4j.util.collection.HashBag;
 import org.eclipse.net4j.util.collection.Pair;
+import org.eclipse.net4j.util.concurrent.ConcurrencyUtil;
+import org.eclipse.net4j.util.concurrent.ExecutorWorkSerializer;
+import org.eclipse.net4j.util.concurrent.IExecutorServiceProvider;
 import org.eclipse.net4j.util.concurrent.IRWLockManager.LockType;
-import org.eclipse.net4j.util.concurrent.QueueRunner;
+import org.eclipse.net4j.util.concurrent.IWorkSerializer;
 import org.eclipse.net4j.util.event.IEvent;
 import org.eclipse.net4j.util.event.IListener;
 import org.eclipse.net4j.util.event.Notifier;
@@ -111,11 +114,12 @@
 import java.util.Map;
 import java.util.Set;
 import java.util.WeakHashMap;
+import java.util.concurrent.ExecutorService;
 
 /**
  * @author Eike Stepper
  */
-public class CDOViewImpl extends AbstractCDOView
+public class CDOViewImpl extends AbstractCDOView implements IExecutorServiceProvider
 {
   private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_VIEW, CDOViewImpl.class);
 
@@ -137,7 +141,7 @@
 
   private Map<CDOObject, CDOLockState> lockStates = new WeakHashMap<CDOObject, CDOLockState>();
 
-  private QueueRunner invalidationRunner = createInvalidationRunner();
+  private ExecutorWorkSerializer invalidationRunner = createInvalidationRunner();
 
   private volatile boolean invalidationRunnerActive;
 
@@ -177,6 +181,11 @@
     viewID = viewId;
   }
 
+  public ExecutorService getExecutorService()
+  {
+    return ConcurrencyUtil.getExecutorService(session);
+  }
+
   /**
    * @since 2.0
    */
@@ -932,8 +941,8 @@
   {
     if (async)
     {
-      QueueRunner runner = getInvalidationRunner();
-      runner.addWork(new InvalidationRunnable(branch, lastUpdateTime, allChangedObjects, allDetachedObjects,
+      IWorkSerializer serializer = getInvalidationRunner();
+      serializer.addWork(new InvalidationRunnable(branch, lastUpdateTime, allChangedObjects, allDetachedObjects,
           oldRevisions, clearResourcePathCache));
     }
     else
@@ -997,35 +1006,23 @@
     }
   }
 
-  public QueueRunner getInvalidationRunner()
+  public ExecutorWorkSerializer getInvalidationRunner()
   {
     return invalidationRunner;
   }
 
-  private QueueRunner createInvalidationRunner()
+  private ExecutorWorkSerializer createInvalidationRunner()
   {
-    return new QueueRunner()
+    return new ExecutorWorkSerializer()
     {
       @Override
-      protected String getThreadName()
-      {
-        return "CDOViewInvalidationRunner-" + CDOViewImpl.this; //$NON-NLS-1$
-      }
-
-      @Override
-      protected void noWork(WorkContext context)
+      protected void noWork()
       {
         if (isClosed())
         {
-          context.terminate();
+          dispose();
         }
       }
-
-      @Override
-      public String toString()
-      {
-        return getThreadName();
-      }
     };
   }
 
@@ -1279,9 +1276,12 @@
   {
     super.doAfterActivate();
 
+    ExecutorService executorService = ConcurrencyUtil.getExecutorService(session);
+    invalidationRunner.setExecutor(executorService);
+
     try
     {
-      invalidationRunner.activate();
+      LifecycleUtil.activate(invalidationRunner);
     }
     catch (LifecycleException ex)
     {
diff --git a/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/AllTests.java b/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/AllTests.java
index 1f9c1a1..f39d73c 100644
--- a/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/AllTests.java
+++ b/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/AllTests.java
@@ -13,10 +13,10 @@
 import org.eclipse.net4j.tests.bugzilla.Bugzilla_241463_Test;
 import org.eclipse.net4j.tests.bugzilla.Bugzilla_259086_Test;
 import org.eclipse.net4j.tests.bugzilla.Bugzilla_262875_Test;
+import org.eclipse.net4j.util.tests.ExecutorWorkSerializerTest;
 import org.eclipse.net4j.util.tests.ExpectedIOTest;
 import org.eclipse.net4j.util.tests.ExtendedIOTest;
 import org.eclipse.net4j.util.tests.MultiMapTest;
-import org.eclipse.net4j.util.tests.QueueWorkerWorkSerializerTest;
 import org.eclipse.net4j.util.tests.ReferenceValueMapTest;
 import org.eclipse.net4j.util.tests.SecurityTest;
 import org.eclipse.net4j.util.tests.SortedFileMapTest;
@@ -52,7 +52,7 @@
     suite.addTestSuite(SignalMonitorTest.TCP.class);
     suite.addTestSuite(ExceptionTest.TCP.class);
     suite.addTestSuite(SecurityTest.class);
-    suite.addTestSuite(QueueWorkerWorkSerializerTest.class);
+    suite.addTestSuite(ExecutorWorkSerializerTest.class);
     suite.addTestSuite(ExpectedIOTest.class);
 
     // Bugzillas
diff --git a/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/TCPConnectorTest.java b/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/TCPConnectorTest.java
index ccc0ff7..d3c555c 100644
--- a/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/TCPConnectorTest.java
+++ b/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/TCPConnectorTest.java
@@ -31,6 +31,7 @@
 import org.eclipse.net4j.tests.bundle.OM;
 import org.eclipse.net4j.util.collection.RoundRobinBlockingQueue;
 import org.eclipse.net4j.util.concurrent.ConcurrencyUtil;
+import org.eclipse.net4j.util.concurrent.ThreadPool;
 import org.eclipse.net4j.util.io.IOUtil;
 import org.eclipse.net4j.util.lifecycle.LifecycleUtil;
 import org.eclipse.net4j.util.security.ChallengeNegotiator;
@@ -47,7 +48,6 @@
 import java.nio.channels.ServerSocketChannel;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
 
 /**
  * @author Eike Stepper
@@ -221,9 +221,7 @@
   public void testDeferredActivation() throws Exception
   {
     final long DELAY = 500L;
-    threadPool = Executors.newCachedThreadPool();
-    LifecycleUtil.activate(threadPool);
-
+    threadPool = ThreadPool.create();
     bufferPool = Net4jUtil.createBufferPool();
     LifecycleUtil.activate(bufferPool);
 
@@ -272,9 +270,7 @@
 
   public void testNegotiationSuccess() throws Exception
   {
-    threadPool = Executors.newCachedThreadPool();
-    LifecycleUtil.activate(threadPool);
-
+    threadPool = ThreadPool.create();
     bufferPool = Net4jUtil.createBufferPool();
     LifecycleUtil.activate(bufferPool);
 
@@ -351,9 +347,7 @@
 
   public void testInvalidUser() throws Exception
   {
-    threadPool = Executors.newCachedThreadPool();
-    LifecycleUtil.activate(threadPool);
-
+    threadPool = ThreadPool.create();
     bufferPool = Net4jUtil.createBufferPool();
     LifecycleUtil.activate(bufferPool);
 
@@ -412,9 +406,7 @@
 
   public void testInvalidPassword() throws Exception
   {
-    threadPool = Executors.newCachedThreadPool();
-    LifecycleUtil.activate(threadPool);
-
+    threadPool = ThreadPool.create();
     bufferPool = Net4jUtil.createBufferPool();
     LifecycleUtil.activate(bufferPool);
 
@@ -473,9 +465,7 @@
 
   public void testNoNegotiator() throws Exception
   {
-    threadPool = Executors.newCachedThreadPool();
-    LifecycleUtil.activate(threadPool);
-
+    threadPool = ThreadPool.create();
     bufferPool = Net4jUtil.createBufferPool();
     LifecycleUtil.activate(bufferPool);
 
@@ -513,9 +503,7 @@
 
   public void testNegotiatorTooLate() throws Exception
   {
-    threadPool = Executors.newCachedThreadPool();
-    LifecycleUtil.activate(threadPool);
-
+    threadPool = ThreadPool.create();
     bufferPool = Net4jUtil.createBufferPool();
     LifecycleUtil.activate(bufferPool);
 
diff --git a/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/defs/JVMAcceptorDefImplTest.java b/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/defs/JVMAcceptorDefImplTest.java
index 5fce150..1abe83f 100644
--- a/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/defs/JVMAcceptorDefImplTest.java
+++ b/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/defs/JVMAcceptorDefImplTest.java
@@ -18,12 +18,12 @@
 import org.eclipse.net4j.internal.jvm.JVMClientConnector;
 import org.eclipse.net4j.jvm.IJVMAcceptor;
 import org.eclipse.net4j.jvm.IJVMConnector;
+import org.eclipse.net4j.util.concurrent.ThreadPool;
 import org.eclipse.net4j.util.defs.Net4jUtilDefsFactory;
 import org.eclipse.net4j.util.lifecycle.LifecycleUtil;
 import org.eclipse.net4j.util.tests.AbstractOMTest;
 
 import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
 
 /**
  * @author Andre Dietisheim
@@ -88,8 +88,6 @@
 
   private ExecutorService createThreadPool()
   {
-    ExecutorService threadPool = Executors.newCachedThreadPool();
-    LifecycleUtil.activate(threadPool);
-    return threadPool;
+    return ThreadPool.create();
   }
 }
diff --git a/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/defs/JVMConnectorDefImplTest.java b/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/defs/JVMConnectorDefImplTest.java
index 0efd62a..97d0796 100644
--- a/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/defs/JVMConnectorDefImplTest.java
+++ b/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/defs/JVMConnectorDefImplTest.java
@@ -18,12 +18,12 @@
 import org.eclipse.net4j.internal.jvm.JVMAcceptor;
 import org.eclipse.net4j.jvm.IJVMAcceptor;
 import org.eclipse.net4j.jvm.IJVMConnector;
+import org.eclipse.net4j.util.concurrent.ThreadPool;
 import org.eclipse.net4j.util.defs.Net4jUtilDefsFactory;
 import org.eclipse.net4j.util.lifecycle.LifecycleUtil;
 import org.eclipse.net4j.util.tests.AbstractOMTest;
 
 import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
 
 /**
  * @author Andre Dietisheim
@@ -63,8 +63,7 @@
 
   private IJVMAcceptor createJVMAcceptor()
   {
-    ExecutorService threadPool = Executors.newCachedThreadPool();
-    LifecycleUtil.activate(threadPool);
+    ExecutorService threadPool = ThreadPool.create();
 
     IBufferPool bufferPool = Net4jUtil.createBufferPool();
     LifecycleUtil.activate(bufferPool);
diff --git a/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/defs/Util.java b/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/defs/Util.java
index 5337a88..2c04cdf 100644
--- a/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/defs/Util.java
+++ b/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/tests/defs/Util.java
@@ -16,6 +16,7 @@
 import org.eclipse.net4j.internal.tcp.TCPClientConnector;
 import org.eclipse.net4j.internal.tcp.TCPConnector;
 import org.eclipse.net4j.internal.tcp.TCPSelector;
+import org.eclipse.net4j.util.concurrent.ThreadPool;
 import org.eclipse.net4j.util.lifecycle.LifecycleUtil;
 import org.eclipse.net4j.util.security.ChallengeNegotiator;
 import org.eclipse.net4j.util.security.INegotiator;
@@ -27,7 +28,6 @@
 import org.eclipse.net4j.util.security.UserManager;
 
 import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
 
 /**
  * @author Eike Stepper
@@ -131,8 +131,6 @@
 
   public static ExecutorService createThreadPool()
   {
-    ExecutorService threadPool = Executors.newCachedThreadPool();
-    LifecycleUtil.activate(threadPool);
-    return threadPool;
+    return ThreadPool.create();
   }
 }
diff --git a/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/util/tests/AbstractOMTest.java b/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/util/tests/AbstractOMTest.java
index 78f6007..950d8db 100644
--- a/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/util/tests/AbstractOMTest.java
+++ b/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/util/tests/AbstractOMTest.java
@@ -58,8 +58,14 @@
  */
 public abstract class AbstractOMTest extends TestCase
 {
+  /**
+   * Timeout duration in millseconds if timeout <b>is not</b> expected.
+   */
   public static final long DEFAULT_TIMEOUT = 15 * 1000;
 
+  /**
+   * Timeout duration in millseconds if timeout <b>is</b> expected.
+   */
   public static final long DEFAULT_TIMEOUT_EXPECTED = 3 * 1000;
 
   public static boolean EXTERNAL_LOG;
diff --git a/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/util/tests/QueueWorkerWorkSerializerTest.java b/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/util/tests/ExecutorWorkSerializerTest.java
similarity index 94%
rename from plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/util/tests/QueueWorkerWorkSerializerTest.java
rename to plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/util/tests/ExecutorWorkSerializerTest.java
index 0ee4714..4aea456 100644
--- a/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/util/tests/QueueWorkerWorkSerializerTest.java
+++ b/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/util/tests/ExecutorWorkSerializerTest.java
@@ -11,7 +11,7 @@
  */
 package org.eclipse.net4j.util.tests;
 
-import org.eclipse.net4j.util.concurrent.QueueWorkerWorkSerializer;
+import org.eclipse.net4j.util.concurrent.ExecutorWorkSerializer;
 import org.eclipse.net4j.util.io.IOUtil;
 
 import java.util.Random;
@@ -22,11 +22,11 @@
 import java.util.concurrent.atomic.AtomicInteger;
 
 /**
- * A test for {@link QueueWorkerWorkSerializer}.
+ * A test for {@link ExecutorWorkSerializer}.
  *
  * @author Andre Dietisheim
  */
-public class QueueWorkerWorkSerializerTest extends AbstractOMTest
+public class ExecutorWorkSerializerTest extends AbstractOMTest
 {
   /** timeout to wait for execution of all work units. */
   private static final int WORK_COMPLETION_TIMEOUT = 10000;
@@ -47,22 +47,24 @@
   private ExecutorService threadPool;
 
   /** The queue worker to submit the work units to. */
-  private QueueWorkerWorkSerializer queueWorker;
+  private ExecutorWorkSerializer queueWorker;
 
   @Override
   public void setUp()
   {
-    threadPool = Executors.newFixedThreadPool(NUM_WORKPRODUCER_THREADS);
-    workConsumedLatch = new CountDownLatch(NUM_WORK);
-    queueWorker = new QueueWorkerWorkSerializer();
     workProduced = new AtomicInteger(0);
+    workConsumedLatch = new CountDownLatch(NUM_WORK);
+
+    threadPool = Executors.newFixedThreadPool(NUM_WORKPRODUCER_THREADS);
+    queueWorker = new ExecutorWorkSerializer(threadPool);
+    queueWorker.activate();
   }
 
   @Override
   public void tearDown()
   {
-    threadPool.shutdown();
     queueWorker.dispose();
+    threadPool.shutdown();
   }
 
   /**
diff --git a/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/util/tests/ThreadPoolTest.java b/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/util/tests/ThreadPoolTest.java
new file mode 100644
index 0000000..8ce34d1
--- /dev/null
+++ b/plugins/org.eclipse.net4j.tests/src/org/eclipse/net4j/util/tests/ThreadPoolTest.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2015 Eike Stepper (Berlin, Germany) 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:
+ *    Eike Stepper - initial API and implementation
+ */
+package org.eclipse.net4j.util.tests;
+
+import org.eclipse.net4j.util.concurrent.ConcurrencyUtil;
+import org.eclipse.net4j.util.concurrent.ThreadPool;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * A test for {@link ThreadPool}.
+ *
+ * @author Eike Stepper
+ */
+public class ThreadPoolTest extends AbstractOMTest
+{
+  public void testThreadPool() throws Exception
+  {
+    final ThreadPool pool = ThreadPool.create("test", 100, 200, 60);
+
+    try
+    {
+      final int tasks = pool.getMaximumPoolSize() + 100;
+      final CountDownLatch latch = new CountDownLatch(tasks);
+
+      for (int i = 0; i < tasks; i++)
+      {
+        final int n = i;
+        msg("scheduling " + n);
+        pool.submit(new Runnable()
+        {
+          public void run()
+          {
+            msg("started " + n + " (wc=" + pool.getPoolSize() + ")");
+            ConcurrencyUtil.sleep(1000);
+            latch.countDown();
+          }
+        });
+      }
+
+      latch.await(DEFAULT_TIMEOUT, TimeUnit.MILLISECONDS);
+      msg("FINISHED");
+    }
+    finally
+    {
+      pool.shutdownNow();
+    }
+  }
+}
diff --git a/plugins/org.eclipse.net4j.util.defs/META-INF/MANIFEST.MF b/plugins/org.eclipse.net4j.util.defs/META-INF/MANIFEST.MF
index 5308210..03926bc 100644
--- a/plugins/org.eclipse.net4j.util.defs/META-INF/MANIFEST.MF
+++ b/plugins/org.eclipse.net4j.util.defs/META-INF/MANIFEST.MF
@@ -2,14 +2,14 @@
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.net4j.util.defs;singleton:=true
-Bundle-Version: 4.1.200.qualifier
+Bundle-Version: 4.1.300.qualifier
 Bundle-ClassPath: .
 Bundle-Vendor: %providerName
 Bundle-Localization: plugin
 Bundle-RequiredExecutionEnvironment: J2SE-1.5
-Export-Package: org.eclipse.net4j.util.defs;version="4.1.200",
- org.eclipse.net4j.util.defs.impl;version="4.1.200",
- org.eclipse.net4j.util.defs.util;version="4.1.200"
+Export-Package: org.eclipse.net4j.util.defs;version="4.1.300",
+ org.eclipse.net4j.util.defs.impl;version="4.1.300",
+ org.eclipse.net4j.util.defs.util;version="4.1.300"
 Require-Bundle: org.eclipse.core.runtime;bundle-version="[3.5.0,4.0.0)";visibility:=reexport,
  org.eclipse.emf.ecore;bundle-version="[2.5.0,3.0.0)";visibility:=reexport,
  org.eclipse.net4j.util;bundle-version="[3.0.0,4.0.0)";visibility:=reexport
diff --git a/plugins/org.eclipse.net4j.util.defs/src/org/eclipse/net4j/util/defs/impl/ThreadPoolDefImpl.java b/plugins/org.eclipse.net4j.util.defs/src/org/eclipse/net4j/util/defs/impl/ThreadPoolDefImpl.java
index 777da0d..1e79795 100644
--- a/plugins/org.eclipse.net4j.util.defs/src/org/eclipse/net4j/util/defs/impl/ThreadPoolDefImpl.java
+++ b/plugins/org.eclipse.net4j.util.defs/src/org/eclipse/net4j/util/defs/impl/ThreadPoolDefImpl.java
@@ -11,14 +11,13 @@
  */
 package org.eclipse.net4j.util.defs.impl;
 
+import org.eclipse.net4j.util.concurrent.ThreadPool;
 import org.eclipse.net4j.util.defs.Net4jUtilDefsPackage;
 import org.eclipse.net4j.util.defs.ThreadPoolDef;
 
 import org.eclipse.emf.ecore.EClass;
 
 import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.ThreadFactory;
 
 /**
  * <!-- begin-user-doc --> An implementation of the model object '<em><b>Thread Pool Def</b></em>'. <!-- end-user-doc
@@ -30,9 +29,6 @@
  */
 public class ThreadPoolDefImpl extends ExecutorServiceDefImpl implements ThreadPoolDef
 {
-
-  private static final String THREADGROUP_IDENTIFIER = "net4j"; //$NON-NLS-1$
-
   /**
    * <!-- begin-user-doc --> <!-- end-user-doc -->
    * @generated
@@ -61,26 +57,8 @@
   @Override
   protected Object createInstance()
   {
-    ExecutorService executorService = Executors.newCachedThreadPool(new DaemonThreadFactory(THREADGROUP_IDENTIFIER));
+    ExecutorService executorService = ThreadPool.create();
     return executorService;
   }
 
-  private static class DaemonThreadFactory implements ThreadFactory
-  {
-    private ThreadGroup threadGroup;
-
-    public DaemonThreadFactory(String threadGroupIdentifier)
-    {
-      super();
-      threadGroup = new ThreadGroup(threadGroupIdentifier);
-    }
-
-    public Thread newThread(Runnable r)
-    {
-      Thread thread = new Thread(threadGroup, r);
-      thread.setDaemon(true);
-      return thread;
-    }
-  }
-
 } // ThreadPoolDefImpl
diff --git a/plugins/org.eclipse.net4j.util/META-INF/MANIFEST.MF b/plugins/org.eclipse.net4j.util/META-INF/MANIFEST.MF
index e85dcff..a1071bf 100644
--- a/plugins/org.eclipse.net4j.util/META-INF/MANIFEST.MF
+++ b/plugins/org.eclipse.net4j.util/META-INF/MANIFEST.MF
@@ -1,7 +1,7 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-SymbolicName: org.eclipse.net4j.util;singleton:=true
-Bundle-Version: 3.5.0.qualifier
+Bundle-Version: 3.6.0.qualifier
 Bundle-Name: %pluginName
 Bundle-Vendor: %providerName
 Bundle-Localization: plugin
@@ -15,34 +15,34 @@
  org.osgi.framework;version="[1.3.0,2.0.0)";resolution:=optional,
  org.osgi.service.log;version="[1.3.0,2.0.0)";resolution:=optional,
  org.osgi.util.tracker;version="[1.3.0,2.0.0)";resolution:=optional
-Export-Package: org.eclipse.net4j.internal.util.bundle;version="3.5.0";x-friends:="org.eclipse.net4j.util.ui,org.eclipse.net4j.tests",
- org.eclipse.net4j.internal.util.container;version="3.5.0";x-friends:="org.eclipse.net4j.util.defs",
- org.eclipse.net4j.internal.util.factory;version="3.5.0";x-friends:="org.eclipse.net4j.util.defs",
- org.eclipse.net4j.internal.util.om;version="3.5.0";x-friends:="org.eclipse.net4j.util.defs",
- org.eclipse.net4j.internal.util.om.pref;version="3.5.0";x-friends:="org.eclipse.net4j.util.defs",
- org.eclipse.net4j.internal.util.table;version="3.5.0";x-internal:=true,
- org.eclipse.net4j.internal.util.test;version="3.5.0";x-friends:="org.eclipse.net4j.tests",
- org.eclipse.net4j.util;version="3.5.0",
- org.eclipse.net4j.util.cache;version="3.5.0",
- org.eclipse.net4j.util.collection;version="3.5.0",
- org.eclipse.net4j.util.concurrent;version="3.5.0",
- org.eclipse.net4j.util.confirmation;version="3.5.0",
- org.eclipse.net4j.util.container;version="3.5.0",
- org.eclipse.net4j.util.container.delegate;version="3.5.0",
- org.eclipse.net4j.util.event;version="3.5.0",
- org.eclipse.net4j.util.factory;version="3.5.0",
- org.eclipse.net4j.util.fsm;version="3.5.0",
- org.eclipse.net4j.util.io;version="3.5.0",
- org.eclipse.net4j.util.lifecycle;version="3.5.0",
- org.eclipse.net4j.util.om;version="3.5.0",
- org.eclipse.net4j.util.om.log;version="3.5.0",
- org.eclipse.net4j.util.om.monitor;version="3.5.0",
- org.eclipse.net4j.util.om.pref;version="3.5.0",
- org.eclipse.net4j.util.om.trace;version="3.5.0",
- org.eclipse.net4j.util.options;version="3.5.0",
- org.eclipse.net4j.util.properties;version="3.5.0",
- org.eclipse.net4j.util.ref;version="3.5.0",
- org.eclipse.net4j.util.registry;version="3.5.0",
- org.eclipse.net4j.util.security;version="3.5.0",
- org.eclipse.net4j.util.transaction;version="3.5.0"
+Export-Package: org.eclipse.net4j.internal.util.bundle;version="3.6.0";x-friends:="org.eclipse.net4j.util.ui,org.eclipse.net4j.tests",
+ org.eclipse.net4j.internal.util.container;version="3.6.0";x-friends:="org.eclipse.net4j.util.defs",
+ org.eclipse.net4j.internal.util.factory;version="3.6.0";x-friends:="org.eclipse.net4j.util.defs",
+ org.eclipse.net4j.internal.util.om;version="3.6.0";x-friends:="org.eclipse.net4j.util.defs",
+ org.eclipse.net4j.internal.util.om.pref;version="3.6.0";x-friends:="org.eclipse.net4j.util.defs",
+ org.eclipse.net4j.internal.util.table;version="3.6.0";x-internal:=true,
+ org.eclipse.net4j.internal.util.test;version="3.6.0";x-friends:="org.eclipse.net4j.tests",
+ org.eclipse.net4j.util;version="3.6.0",
+ org.eclipse.net4j.util.cache;version="3.6.0",
+ org.eclipse.net4j.util.collection;version="3.6.0",
+ org.eclipse.net4j.util.concurrent;version="3.6.0",
+ org.eclipse.net4j.util.confirmation;version="3.6.0",
+ org.eclipse.net4j.util.container;version="3.6.0",
+ org.eclipse.net4j.util.container.delegate;version="3.6.0",
+ org.eclipse.net4j.util.event;version="3.6.0",
+ org.eclipse.net4j.util.factory;version="3.6.0",
+ org.eclipse.net4j.util.fsm;version="3.6.0",
+ org.eclipse.net4j.util.io;version="3.6.0",
+ org.eclipse.net4j.util.lifecycle;version="3.6.0",
+ org.eclipse.net4j.util.om;version="3.6.0",
+ org.eclipse.net4j.util.om.log;version="3.6.0",
+ org.eclipse.net4j.util.om.monitor;version="3.6.0",
+ org.eclipse.net4j.util.om.pref;version="3.6.0",
+ org.eclipse.net4j.util.om.trace;version="3.6.0",
+ org.eclipse.net4j.util.options;version="3.6.0",
+ org.eclipse.net4j.util.properties;version="3.6.0",
+ org.eclipse.net4j.util.ref;version="3.6.0",
+ org.eclipse.net4j.util.registry;version="3.6.0",
+ org.eclipse.net4j.util.security;version="3.6.0",
+ org.eclipse.net4j.util.transaction;version="3.6.0"
 Eclipse-BuddyPolicy: registered
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/AsynchronousWorkSerializer.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/AsynchronousWorkSerializer.java
index 887dc56..80133bf 100644
--- a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/AsynchronousWorkSerializer.java
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/AsynchronousWorkSerializer.java
@@ -19,8 +19,10 @@
 
 /**
  * @author Eike Stepper
+ * @deprecated As of 3.6 use {@link ExecutorWorkSerializer}.
  */
-public class AsynchronousWorkSerializer implements IWorkSerializer, Runnable
+@Deprecated
+public class AsynchronousWorkSerializer implements IWorkSerializer, IExecutorServiceProvider, Runnable
 {
   private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_CONCURRENCY, AsynchronousWorkSerializer.class);
 
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/CompletionWorkSerializer.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/CompletionWorkSerializer.java
index 9b4dc04..69534b6 100644
--- a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/CompletionWorkSerializer.java
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/CompletionWorkSerializer.java
@@ -18,7 +18,9 @@
 
 /**
  * @author Eike Stepper
+ * @deprecated As of 3.6 use {@link ExecutorWorkSerializer}.
  */
+@Deprecated
 public class CompletionWorkSerializer implements IWorkSerializer
 {
   private CompletionService<Object> completionService;
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/ConcurrencyUtil.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/ConcurrencyUtil.java
index 303cf02..5a9905e 100644
--- a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/ConcurrencyUtil.java
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/ConcurrencyUtil.java
@@ -54,4 +54,36 @@
   {
     return ExecutorServiceFactory.get(container);
   }
+
+  /**
+   * @since 3.6
+   */
+  public static ExecutorService getExecutorService(Object object)
+  {
+    if (object instanceof IExecutorServiceProvider)
+    {
+      try
+      {
+        return ((IExecutorServiceProvider)object).getExecutorService();
+      }
+      catch (Exception ex)
+      {
+        //$FALL-THROUGH$
+      }
+    }
+
+    if (object instanceof IManagedContainer)
+    {
+      try
+      {
+        return getExecutorService((IManagedContainer)object);
+      }
+      catch (Exception ex)
+      {
+        //$FALL-THROUGH$
+      }
+    }
+
+    return null;
+  }
 }
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/DelegatingExecutorService.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/DelegatingExecutorService.java
new file mode 100644
index 0000000..cbd4806
--- /dev/null
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/DelegatingExecutorService.java
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2004-2015 Eike Stepper (Berlin, Germany) 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:
+ *    Eike Stepper - initial API and implementation
+ */
+package org.eclipse.net4j.util.concurrent;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+/**
+ * @author Eike Stepper
+ * @since 3.6
+ */
+public class DelegatingExecutorService implements ExecutorService
+{
+  private final ExecutorService delegate;
+
+  public DelegatingExecutorService(ExecutorService delegate)
+  {
+    this.delegate = delegate;
+  }
+
+  public void execute(Runnable command)
+  {
+    delegate.execute(command);
+  }
+
+  public void shutdown()
+  {
+    // Do nothing.
+  }
+
+  public List<Runnable> shutdownNow()
+  {
+    return Collections.emptyList();
+  }
+
+  public boolean isShutdown()
+  {
+    return delegate.isShutdown();
+  }
+
+  public boolean isTerminated()
+  {
+    return delegate.isTerminated();
+  }
+
+  public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException
+  {
+    return delegate.awaitTermination(timeout, unit);
+  }
+
+  public <T> Future<T> submit(Callable<T> task)
+  {
+    return delegate.submit(task);
+  }
+
+  public <T> Future<T> submit(Runnable task, T result)
+  {
+    return delegate.submit(task, result);
+  }
+
+  public Future<?> submit(Runnable task)
+  {
+    return delegate.submit(task);
+  }
+
+  public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks) throws InterruptedException
+  {
+    return delegate.invokeAll(tasks);
+  }
+
+  public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit)
+      throws InterruptedException
+  {
+    return delegate.invokeAll(tasks, timeout, unit);
+  }
+
+  public <T> T invokeAny(Collection<? extends Callable<T>> tasks) throws InterruptedException, ExecutionException
+  {
+    return delegate.invokeAny(tasks);
+  }
+
+  public <T> T invokeAny(Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit)
+      throws InterruptedException, ExecutionException, TimeoutException
+  {
+    return delegate.invokeAny(tasks, timeout, unit);
+  }
+}
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/ExecutorServiceFactory.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/ExecutorServiceFactory.java
index 965deb6..681d60d 100644
--- a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/ExecutorServiceFactory.java
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/ExecutorServiceFactory.java
@@ -20,8 +20,6 @@
 import org.eclipse.net4j.util.lifecycle.LifecycleUtil;
 
 import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.ThreadFactory;
 
 /**
  * @author Eike Stepper
@@ -40,87 +38,70 @@
     super(PRODUCT_GROUP, TYPE);
   }
 
-  public ExecutorService create(String threadGroupName)
+  public ExecutorService create(String description)
   {
-    if (threadGroupName == null)
-    {
-      threadGroupName = DEFAULT_THREAD_GROUP_NAME;
-    }
+    final ExecutorService executorService = ThreadPool.create(description);
 
-    final ThreadGroup threadGroup = new ThreadGroup(threadGroupName);
-    ThreadFactory threadFactory = new ThreadFactory()
-    {
-      private int num;
-
-      public Thread newThread(Runnable r)
-      {
-        Thread thread = new Thread(threadGroup, r, threadGroup.getName() + "-Thread-" + ++num);
-        thread.setDaemon(true);
-        return thread;
-      }
-    };
-
-    final ExecutorService executorService = Executors.newCachedThreadPool(threadFactory);
     return LifecycleUtil.delegateLifecycle(getClass().getClassLoader(), executorService, ExecutorService.class,
         new ILifecycle()
-    {
-      private boolean active;
-
-      public void activate() throws LifecycleException
-      {
-        active = true;
-      }
-
-      public Exception deactivate()
-      {
-        try
         {
-          executorService.shutdown();
-          active = false;
-          return null;
-        }
-        catch (Exception ex)
-        {
-          return ex;
-        }
-      }
+          private boolean active;
 
-      public LifecycleState getLifecycleState()
-      {
-        return active ? LifecycleState.ACTIVE : LifecycleState.INACTIVE;
-      }
+          public void activate() throws LifecycleException
+          {
+            active = true;
+          }
 
-      public boolean isActive()
-      {
-        return active;
-      }
+          public Exception deactivate()
+          {
+            try
+            {
+              executorService.shutdown();
+              active = false;
+              return null;
+            }
+            catch (Exception ex)
+            {
+              return ex;
+            }
+          }
 
-      public void addListener(IListener listener)
-      {
-        // Do nothing
-      }
+          public LifecycleState getLifecycleState()
+          {
+            return active ? LifecycleState.ACTIVE : LifecycleState.INACTIVE;
+          }
 
-      public void removeListener(IListener listener)
-      {
-        // Do nothing
-      }
+          public boolean isActive()
+          {
+            return active;
+          }
 
-      public IListener[] getListeners()
-      {
-        return EventUtil.NO_LISTENERS;
-      }
+          public void addListener(IListener listener)
+          {
+            // Do nothing
+          }
 
-      public boolean hasListeners()
-      {
-        return false;
-      }
+          public void removeListener(IListener listener)
+          {
+            // Do nothing
+          }
 
-      @Override
-      public String toString()
-      {
-        return "CachedThreadPool";
-      }
-    });
+          public IListener[] getListeners()
+          {
+            return EventUtil.NO_LISTENERS;
+          }
+
+          public boolean hasListeners()
+          {
+            return false;
+          }
+
+          @Override
+          public String toString()
+          {
+            return "CachedThreadPool";
+          }
+        });
   }
 
   public static ExecutorService get(IManagedContainer container)
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/ExecutorWorkSerializer.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/ExecutorWorkSerializer.java
new file mode 100644
index 0000000..621ec5d
--- /dev/null
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/ExecutorWorkSerializer.java
@@ -0,0 +1,171 @@
+/*
+ * Copyright (c) 2015 Eike Stepper (Berlin, Germany) 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:
+ *    Eike Stepper - initial API and implementation
+ */
+package org.eclipse.net4j.util.concurrent;
+
+import org.eclipse.net4j.util.lifecycle.Lifecycle;
+import org.eclipse.net4j.util.lifecycle.LifecycleUtil;
+import org.eclipse.net4j.util.om.log.OMLogger;
+
+import java.util.LinkedList;
+import java.util.Queue;
+import java.util.concurrent.Executor;
+
+/**
+ * @author Eike Stepper
+ * @since 3.6
+ */
+public class ExecutorWorkSerializer extends Lifecycle implements IWorkSerializer
+{
+  private final Queue<Runnable> workQueue = new LinkedList<Runnable>();
+
+  private Executor executor;
+
+  private volatile boolean working;
+
+  private volatile boolean disposed;
+
+  public ExecutorWorkSerializer()
+  {
+  }
+
+  public ExecutorWorkSerializer(Executor executor)
+  {
+    this.executor = executor;
+  }
+
+  public Executor getExecutor()
+  {
+    return executor;
+  }
+
+  public void setExecutor(Executor executor)
+  {
+    checkInactive();
+    this.executor = executor;
+  }
+
+  public synchronized boolean addWork(Runnable runnable)
+  {
+    if (disposed)
+    {
+      return false;
+    }
+
+    if (!working && isActive())
+    {
+      startWork(runnable);
+    }
+    else
+    {
+      workQueue.add(runnable);
+    }
+
+    return true;
+  }
+
+  public synchronized void dispose()
+  {
+    LifecycleUtil.deactivate(this, OMLogger.Level.DEBUG);
+  }
+
+  @Override
+  public String toString()
+  {
+    return ExecutorWorkSerializer.class.getSimpleName();
+  }
+
+  protected void handleException(Runnable runnable, Throwable ex)
+  {
+  }
+
+  protected void noWork()
+  {
+  }
+
+  private void startWork(final Runnable runnable)
+  {
+    working = true;
+    if (!disposed)
+    {
+      executor.execute(new RunnableWithName()
+      {
+        public String getName()
+        {
+          if (runnable instanceof RunnableWithName)
+          {
+            return ((RunnableWithName)runnable).getName();
+          }
+
+          return null;
+        }
+
+        public void run()
+        {
+          try
+          {
+            runnable.run();
+          }
+          catch (Throwable ex)
+          {
+            try
+            {
+              handleException(runnable, ex);
+            }
+            catch (Throwable ignore)
+            {
+              //$FALL-THROUGH$
+            }
+          }
+
+          workDone();
+        }
+      });
+    }
+  }
+
+  private synchronized void workDone()
+  {
+    Runnable runnable = workQueue.poll();
+    if (runnable != null)
+    {
+      startWork(runnable);
+    }
+    else
+    {
+      noWork();
+      working = false;
+    }
+  }
+
+  @Override
+  protected void doBeforeActivate() throws Exception
+  {
+    super.doBeforeActivate();
+    checkState(executor, "executor");
+  }
+
+  @Override
+  protected void doActivate() throws Exception
+  {
+    super.doActivate();
+    workDone();
+  }
+
+  @Override
+  protected void doDeactivate() throws Exception
+  {
+    disposed = true;
+    working = false;
+    workQueue.clear();
+
+    super.doDeactivate();
+  }
+}
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/IExecutorServiceProvider.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/IExecutorServiceProvider.java
new file mode 100644
index 0000000..becd91b
--- /dev/null
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/IExecutorServiceProvider.java
@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2015 Eike Stepper (Berlin, Germany) 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:
+ *    Eike Stepper - initial API and implementation
+ */
+package org.eclipse.net4j.util.concurrent;
+
+import java.util.concurrent.ExecutorService;
+
+/**
+ * @author Eike Stepper
+ * @since 3.6
+ */
+public interface IExecutorServiceProvider
+{
+  public ExecutorService getExecutorService();
+}
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/QueueWorkerWorkSerializer.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/QueueWorkerWorkSerializer.java
index 2baf087..03163ef 100644
--- a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/QueueWorkerWorkSerializer.java
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/QueueWorkerWorkSerializer.java
@@ -15,7 +15,9 @@
 
 /**
  * @author Eike Stepper
+ * @deprecated As of 3.6 use {@link ExecutorWorkSerializer}.
  */
+@Deprecated
 public class QueueWorkerWorkSerializer extends QueueRunner implements IWorkSerializer
 {
   public QueueWorkerWorkSerializer()
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/RunnableWithName.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/RunnableWithName.java
new file mode 100644
index 0000000..048de5a
--- /dev/null
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/RunnableWithName.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2015 Eike Stepper (Berlin, Germany) 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:
+ *    Eike Stepper - initial API and implementation
+ */
+package org.eclipse.net4j.util.concurrent;
+
+/**
+ * @author Eike Stepper
+ * @since 3.6
+ */
+public interface RunnableWithName extends Runnable
+{
+  public String getName();
+}
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/ThreadPool.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/ThreadPool.java
new file mode 100644
index 0000000..b172dc0
--- /dev/null
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/concurrent/ThreadPool.java
@@ -0,0 +1,384 @@
+/*
+ * Copyright (c) 2004-2015 Eike Stepper (Berlin, Germany) 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:
+ *    Eike Stepper - initial API and implementation
+ */
+package org.eclipse.net4j.util.concurrent;
+
+import org.eclipse.net4j.util.StringUtil;
+
+import java.lang.reflect.Method;
+import java.util.AbstractQueue;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.Executor;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.RejectedExecutionHandler;
+import java.util.concurrent.ThreadFactory;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+
+/**
+ * @author Eike Stepper
+ * @since 3.6
+ */
+public class ThreadPool extends ThreadPoolExecutor implements RejectedExecutionHandler
+{
+  public static final String DEFAULT_THREAD_GROUP_NAME = ExecutorServiceFactory.DEFAULT_THREAD_GROUP_NAME;
+
+  public static final int DEFAULT_CORE_POOL_SIZE = 10;
+
+  public static final int DEFAULT_MAXIMUM_POOL_SIZE = 100;
+
+  public static final long DEFAULT_KEEP_ALIVE_SECONDS = 60;
+
+  private static final Class<?> LINKED_BLOCKING_DEQUE_CLASS;
+
+  private static final Method ADD_FIRST_METHOD;
+
+  private final Executor defaultExecutor = new Executor()
+  {
+    public void execute(Runnable runnable)
+    {
+      ThreadPool.super.execute(runnable);
+    }
+  };
+
+  private final Executor namingExecutor = new Executor()
+  {
+    public void execute(Runnable runnable)
+    {
+      if (runnable instanceof RunnableWithName)
+      {
+        String name = ((RunnableWithName)runnable).getName();
+        if (name != null)
+        {
+          Thread thread = new Thread(runnable, name);
+          thread.setDaemon(true);
+          thread.start();
+          return;
+        }
+      }
+
+      ThreadPool.super.execute(runnable);
+    }
+  };
+
+  private volatile Executor executor = defaultExecutor;
+
+  public ThreadPool(int corePoolSize, int maximumPoolSize, long keepAliveTime, ThreadFactory threadFactory)
+  {
+    super(corePoolSize, maximumPoolSize, keepAliveTime, TimeUnit.SECONDS, createWorkQueue(), threadFactory);
+    ((ThreadPool.WorkQueue)getQueue()).setThreadPool(this);
+    setRejectedExecutionHandler(this);
+  }
+
+  public final void setNaming(boolean naming)
+  {
+    executor = naming ? namingExecutor : defaultExecutor;
+  }
+
+  @Override
+  public void execute(final Runnable runnable)
+  {
+    executor.execute(runnable);
+  }
+
+  public void rejectedExecution(Runnable runnable, ThreadPoolExecutor executor)
+  {
+    ((ThreadPool.WorkQueue)getQueue()).addFirst(runnable);
+  }
+
+  public static ThreadPool create()
+  {
+    return create(null, DEFAULT_CORE_POOL_SIZE, DEFAULT_MAXIMUM_POOL_SIZE, DEFAULT_KEEP_ALIVE_SECONDS);
+  }
+
+  public static ThreadPool create(String description)
+  {
+    String threadGroupName = null;
+    int corePoolSize = DEFAULT_CORE_POOL_SIZE;
+    int maximumPoolSize = DEFAULT_MAXIMUM_POOL_SIZE;
+    long keepAliveSeconds = DEFAULT_KEEP_ALIVE_SECONDS;
+
+    if (!StringUtil.isEmpty(description))
+    {
+      String[] tokens = description.split(":");
+      if (tokens.length > 0)
+      {
+        threadGroupName = tokens[0];
+        if (tokens.length > 1)
+        {
+          try
+          {
+            corePoolSize = Integer.parseInt(tokens[1]);
+          }
+          catch (NumberFormatException ex)
+          {
+            //$FALL-THROUGH$
+          }
+
+          if (tokens.length > 2)
+          {
+            try
+            {
+              maximumPoolSize = Integer.parseInt(tokens[2]);
+            }
+            catch (NumberFormatException ex)
+            {
+              //$FALL-THROUGH$
+            }
+
+            if (tokens.length > 3)
+            {
+              try
+              {
+                keepAliveSeconds = Long.parseLong(tokens[3]);
+              }
+              catch (NumberFormatException ex)
+              {
+                //$FALL-THROUGH$
+              }
+            }
+          }
+        }
+      }
+    }
+
+    return create(threadGroupName, corePoolSize, maximumPoolSize, keepAliveSeconds);
+  }
+
+  public static ThreadPool create(String threadGroupName, int corePoolSize, int maximumPoolSize, long keepAliveSeconds)
+  {
+    ThreadFactory threadFactory = createThreadFactory(threadGroupName);
+    return new ThreadPool(corePoolSize, maximumPoolSize, keepAliveSeconds, threadFactory);
+  }
+
+  private static ThreadFactory createThreadFactory(String threadGroupName)
+  {
+    if (threadGroupName == null)
+    {
+      threadGroupName = DEFAULT_THREAD_GROUP_NAME;
+    }
+
+    final ThreadGroup threadGroup = new ThreadGroup(threadGroupName);
+
+    ThreadFactory threadFactory = new ThreadFactory()
+    {
+      private final AtomicInteger num = new AtomicInteger();
+
+      public Thread newThread(Runnable r)
+      {
+        Thread thread = new Thread(threadGroup, r, threadGroup.getName() + "-thread-" + num.incrementAndGet());
+        thread.setDaemon(true);
+        return thread;
+      }
+    };
+
+    return threadFactory;
+  }
+
+  private static ThreadPool.WorkQueue createWorkQueue()
+  {
+    if (LINKED_BLOCKING_DEQUE_CLASS != null)
+    {
+      try
+      {
+        return new WorkQueueJRE16();
+      }
+      catch (Throwable ex)
+      {
+        //$FALL-THROUGH$
+      }
+    }
+
+    return new WorkQueueJRE15();
+  }
+
+  static
+  {
+    Class<?> c = null;
+    Method m = null;
+
+    try
+    {
+      c = Class.forName("java.util.concurrent.LinkedBlockingDeque");
+      m = c.getMethod("addFirst", Object.class);
+    }
+    catch (Throwable ex)
+    {
+      c = null;
+      m = null;
+    }
+
+    LINKED_BLOCKING_DEQUE_CLASS = c;
+    ADD_FIRST_METHOD = m;
+  }
+
+  /**
+   * @author Eike Stepper
+   */
+  private interface WorkQueue extends BlockingQueue<Runnable>
+  {
+    public void setThreadPool(ThreadPool threadPool);
+
+    public void addFirst(Runnable runnable);
+  }
+
+  /**
+   * @author Eike Stepper
+   */
+  private static final class WorkQueueJRE15 extends LinkedBlockingQueue<Runnable>implements ThreadPool.WorkQueue
+  {
+    private static final long serialVersionUID = 1L;
+
+    private ThreadPool threadPool;
+
+    public WorkQueueJRE15()
+    {
+    }
+
+    public void setThreadPool(ThreadPool threadPool)
+    {
+      this.threadPool = threadPool;
+    }
+
+    public void addFirst(Runnable runnable)
+    {
+      super.offer(runnable);
+    }
+
+    @Override
+    public boolean offer(Runnable runnable)
+    {
+      if (threadPool.getPoolSize() < threadPool.getMaximumPoolSize())
+      {
+        return false;
+      }
+
+      return super.offer(runnable);
+    }
+  }
+
+  /**
+   * @author Eike Stepper
+   */
+  private static final class WorkQueueJRE16 extends AbstractQueue<Runnable>implements ThreadPool.WorkQueue
+  {
+    private final BlockingQueue<Runnable> delegate = createDelegate();
+
+    private ThreadPool threadPool;
+
+    public WorkQueueJRE16()
+    {
+    }
+
+    public void setThreadPool(ThreadPool threadPool)
+    {
+      this.threadPool = threadPool;
+    }
+
+    public void addFirst(Runnable runnable)
+    {
+      try
+      {
+        ADD_FIRST_METHOD.invoke(delegate, runnable);
+      }
+      catch (Throwable ex)
+      {
+        //$FALL-THROUGH$
+      }
+
+      delegate.offer(runnable);
+    }
+
+    public boolean offer(Runnable r)
+    {
+      if (threadPool.getPoolSize() < threadPool.getMaximumPoolSize())
+      {
+        return false;
+      }
+
+      return delegate.offer(r);
+    }
+
+    @Override
+    public int size()
+    {
+      return delegate.size();
+    }
+
+    public Runnable poll()
+    {
+      return delegate.poll();
+    }
+
+    @Override
+    public Iterator<Runnable> iterator()
+    {
+      return delegate.iterator();
+    }
+
+    public Runnable peek()
+    {
+      return delegate.peek();
+    }
+
+    public void put(Runnable e) throws InterruptedException
+    {
+      delegate.put(e);
+    }
+
+    public boolean offer(Runnable e, long timeout, TimeUnit unit) throws InterruptedException
+    {
+      return delegate.offer(e, timeout, unit);
+    }
+
+    public Runnable take() throws InterruptedException
+    {
+      return delegate.take();
+    }
+
+    public Runnable poll(long timeout, TimeUnit unit) throws InterruptedException
+    {
+      return delegate.poll(timeout, unit);
+    }
+
+    public int remainingCapacity()
+    {
+      return delegate.remainingCapacity();
+    }
+
+    public int drainTo(Collection<? super Runnable> c)
+    {
+      return delegate.drainTo(c);
+    }
+
+    public int drainTo(Collection<? super Runnable> c, int maxElements)
+    {
+      return delegate.drainTo(c, maxElements);
+    }
+
+    @SuppressWarnings("unchecked")
+    private static BlockingQueue<Runnable> createDelegate()
+    {
+      try
+      {
+        return (BlockingQueue<Runnable>)LINKED_BLOCKING_DEQUE_CLASS.newInstance();
+      }
+      catch (Throwable ex)
+      {
+        //$FALL-THROUGH$
+      }
+
+      return new LinkedBlockingQueue<Runnable>();
+    }
+  }
+}
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/event/ExecutorServiceNotifier.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/event/ExecutorServiceNotifier.java
index 120b3a0..d51e68d 100644
--- a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/event/ExecutorServiceNotifier.java
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/event/ExecutorServiceNotifier.java
@@ -10,6 +10,8 @@
  */
 package org.eclipse.net4j.util.event;
 
+import org.eclipse.net4j.util.concurrent.IExecutorServiceProvider;
+
 import java.util.concurrent.ExecutorService;
 
 /**
@@ -20,7 +22,7 @@
  * @apiviz.exclude
  */
 @Deprecated
-public class ExecutorServiceNotifier extends Notifier
+public class ExecutorServiceNotifier extends Notifier implements IExecutorServiceProvider
 {
   private ExecutorService notificationExecutorService;
 
@@ -28,6 +30,14 @@
   {
   }
 
+  /**
+   * @since 3.6
+   */
+  public ExecutorService getExecutorService()
+  {
+    return notificationExecutorService;
+  }
+
   @Override
   public ExecutorService getNotificationService()
   {
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/io/DataInputExtender.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/io/DataInputExtender.java
index 3a93c37..20f8d6a 100644
--- a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/io/DataInputExtender.java
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/io/DataInputExtender.java
@@ -12,13 +12,14 @@
 
 import org.eclipse.net4j.util.io.ExtendedIOUtil.ClassResolver;
 
+import java.io.Closeable;
 import java.io.DataInput;
 import java.io.IOException;
 
 /**
  * @author Eike Stepper
  */
-public class DataInputExtender implements ExtendedDataInput
+public class DataInputExtender implements ExtendedDataInput, Closeable
 {
   private DataInput input;
 
@@ -142,4 +143,15 @@
   {
     return input.skipBytes(n);
   }
+
+  /**
+   * @since 3.6
+   */
+  public void close() throws IOException
+  {
+    if (input instanceof Closeable)
+    {
+      ((Closeable)input).close();
+    }
+  }
 }
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/io/DataOutputExtender.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/io/DataOutputExtender.java
index c93eab8..d6192e9 100644
--- a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/io/DataOutputExtender.java
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/io/DataOutputExtender.java
@@ -10,13 +10,14 @@
  */
 package org.eclipse.net4j.util.io;
 
+import java.io.Closeable;
 import java.io.DataOutput;
 import java.io.IOException;
 
 /**
  * @author Eike Stepper
  */
-public class DataOutputExtender implements ExtendedDataOutput
+public class DataOutputExtender implements ExtendedDataOutput, Closeable
 {
   private DataOutput output;
 
@@ -125,4 +126,15 @@
   {
     ExtendedIOUtil.writeException(output, t);
   }
+
+  /**
+   * @since 3.6
+   */
+  public void close() throws IOException
+  {
+    if (output instanceof Closeable)
+    {
+      ((Closeable)output).close();
+    }
+  }
 }
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/io/ExtendedDataInput.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/io/ExtendedDataInput.java
index f52c4e2..01fbf08 100644
--- a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/io/ExtendedDataInput.java
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/io/ExtendedDataInput.java
@@ -12,6 +12,7 @@
 
 import org.eclipse.net4j.util.io.ExtendedIOUtil.ClassResolver;
 
+import java.io.Closeable;
 import java.io.DataInput;
 import java.io.EOFException;
 import java.io.IOException;
@@ -48,7 +49,7 @@
    * @author Eike Stepper
    * @since 2.0
    */
-  public static class Delegating implements ExtendedDataInput
+  public static class Delegating implements ExtendedDataInput, Closeable
   {
     private ExtendedDataInput delegate;
 
@@ -177,6 +178,17 @@
     {
       return delegate.skipBytes(n);
     }
+
+    /**
+     * @since 3.6
+     */
+    public void close() throws IOException
+    {
+      if (delegate instanceof Closeable)
+      {
+        ((Closeable)delegate).close();
+      }
+    }
   }
 
   /**
@@ -209,5 +221,16 @@
         return -1;
       }
     }
+
+    @Override
+    public void close() throws IOException
+    {
+      if (delegate instanceof Closeable)
+      {
+        ((Closeable)delegate).close();
+      }
+
+      super.close();
+    }
   }
 }
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/io/ExtendedDataOutput.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/io/ExtendedDataOutput.java
index f3d47ce..74d86e8 100644
--- a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/io/ExtendedDataOutput.java
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/io/ExtendedDataOutput.java
@@ -10,6 +10,7 @@
  */
 package org.eclipse.net4j.util.io;
 
+import java.io.Closeable;
 import java.io.DataOutput;
 import java.io.IOException;
 import java.io.OutputStream;
@@ -41,7 +42,7 @@
    * @author Eike Stepper
    * @since 2.0
    */
-  public static class Delegating implements ExtendedDataOutput
+  public static class Delegating implements ExtendedDataOutput, Closeable
   {
     private ExtendedDataOutput delegate;
 
@@ -155,6 +156,17 @@
     {
       delegate.writeUTF(str);
     }
+
+    /**
+     * @since 3.6
+     */
+    public void close() throws IOException
+    {
+      if (delegate instanceof Closeable)
+      {
+        ((Closeable)delegate).close();
+      }
+    }
   }
 
   /**
@@ -180,5 +192,16 @@
     {
       delegate.write(b);
     }
+
+    @Override
+    public void close() throws IOException
+    {
+      if (delegate instanceof Closeable)
+      {
+        ((Closeable)delegate).close();
+      }
+
+      super.close();
+    }
   }
 }
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/ref/CleanableReferenceQueue.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/ref/CleanableReferenceQueue.java
new file mode 100644
index 0000000..4991d90
--- /dev/null
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/ref/CleanableReferenceQueue.java
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2011-2013, 2015 Eike Stepper (Berlin, Germany) 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:
+ *    Eike Stepper - initial API and implementation
+ *    Simon McDuff - bug 201266
+ *    Simon McDuff - bug 230832
+ */
+package org.eclipse.net4j.util.ref;
+
+import java.lang.ref.Reference;
+import java.lang.ref.ReferenceQueue;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+/**
+ * @author Eike Stepper
+ * @since 3.6
+ */
+public abstract class CleanableReferenceQueue<T> extends ReferenceQueue<T>
+{
+  public static final int ALL_WORK_PER_POLL = ReferenceQueueWorker.ALL_WORK_PER_POLL;
+
+  public static final int DEFAULT_MAX_WORK_PER_POLL = ReferenceQueueWorker.DEFAULT_MAX_WORK_PER_POLL;
+
+  public static final int DEFAULT_POLL_MILLIS = ReferenceQueueWorker.DEFAULT_POLL_MILLIS;
+
+  private final AtomicBoolean cleaning = new AtomicBoolean();
+
+  private int maxWorkPerPoll;
+
+  private long pollMillis;
+
+  private long lastPoll = System.currentTimeMillis();
+
+  public CleanableReferenceQueue()
+  {
+    setPollMillis(DEFAULT_POLL_MILLIS);
+    setMaxWorkPerPoll(DEFAULT_MAX_WORK_PER_POLL);
+  }
+
+  public final long getPollMillis()
+  {
+    return pollMillis;
+  }
+
+  public final void setPollMillis(long pollMillis)
+  {
+    this.pollMillis = pollMillis;
+  }
+
+  public final int getMaxWorkPerPoll()
+  {
+    return maxWorkPerPoll;
+  }
+
+  public final void setMaxWorkPerPoll(int maxWorkPerPoll)
+  {
+    this.maxWorkPerPoll = maxWorkPerPoll;
+  }
+
+  public final void register(T object)
+  {
+    clean();
+    createReference(object);
+  }
+
+  public final void clean()
+  {
+    if (cleaning.compareAndSet(false, true))
+    {
+      long now = System.currentTimeMillis();
+      if (lastPoll + pollMillis > now)
+      {
+        int count = maxWorkPerPoll;
+        if (count == ALL_WORK_PER_POLL)
+        {
+          count = Integer.MAX_VALUE;
+        }
+
+        for (int i = 0; i < count; i++)
+        {
+          Reference<? extends T> reference = poll();
+          if (reference == null)
+          {
+            break;
+          }
+
+          cleanReference(reference);
+        }
+
+        lastPoll = now;
+      }
+
+      cleaning.set(false);
+    }
+  }
+
+  protected abstract void cleanReference(Reference<? extends T> reference);
+
+  protected abstract Reference<T> createReference(T object);
+}
diff --git a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/ref/ReferenceQueueWorker.java b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/ref/ReferenceQueueWorker.java
index 0fc0d05..2598c12 100644
--- a/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/ref/ReferenceQueueWorker.java
+++ b/plugins/org.eclipse.net4j.util/src/org/eclipse/net4j/util/ref/ReferenceQueueWorker.java
@@ -25,11 +25,6 @@
   /**
    * @since 3.0
    */
-  public static final int DEFAULT_POLL_MILLIS = 1000 * 60; // One minute
-
-  /**
-   * @since 3.0
-   */
   public static final int ALL_WORK_PER_POLL = -1;
 
   /**
@@ -37,6 +32,11 @@
    */
   public static final int DEFAULT_MAX_WORK_PER_POLL = ALL_WORK_PER_POLL;
 
+  /**
+   * @since 3.0
+   */
+  public static final int DEFAULT_POLL_MILLIS = 1000 * 60; // One minute
+
   private ReferenceQueue<T> queue = new ReferenceQueue<T>();
 
   private long pollMillis;
diff --git a/plugins/org.eclipse.net4j/META-INF/MANIFEST.MF b/plugins/org.eclipse.net4j/META-INF/MANIFEST.MF
index 5cdff1a..67e3c0d 100644
--- a/plugins/org.eclipse.net4j/META-INF/MANIFEST.MF
+++ b/plugins/org.eclipse.net4j/META-INF/MANIFEST.MF
@@ -1,7 +1,7 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-SymbolicName: org.eclipse.net4j;singleton:=true
-Bundle-Version: 4.4.100.qualifier
+Bundle-Version: 4.5.0.qualifier
 Bundle-Name: %pluginName
 Bundle-Vendor: %providerName
 Bundle-Localization: plugin
@@ -11,7 +11,7 @@
 Bundle-ClassPath: .
 Require-Bundle: org.eclipse.core.runtime;bundle-version="[3.5.0,4.0.0)";resolution:=optional,
  org.eclipse.net4j.util;bundle-version="[3.0.0,4.0.0)";visibility:=reexport
-Export-Package: org.eclipse.internal.net4j;version="4.4.100";
+Export-Package: org.eclipse.internal.net4j;version="4.5.0";
   x-friends:="org.eclipse.net4j.http.server,
    org.eclipse.net4j.jvm,
    org.eclipse.net4j.tcp,
@@ -20,7 +20,7 @@
    org.eclipse.net4j.http.tests,
    org.eclipse.net4j.tests,
    org.eclipse.net4j.defs",
- org.eclipse.internal.net4j.buffer;version="4.4.100";
+ org.eclipse.internal.net4j.buffer;version="4.5.0";
   x-friends:="org.eclipse.net4j.http.server,
    org.eclipse.net4j.jvm,
    org.eclipse.net4j.tcp,
@@ -29,17 +29,17 @@
    org.eclipse.net4j.http.tests,
    org.eclipse.net4j.tests,
    org.eclipse.net4j.defs",
- org.eclipse.internal.net4j.bundle;version="4.4.100";x-internal:=true,
- org.eclipse.net4j;version="4.4.100",
- org.eclipse.net4j.acceptor;version="4.4.100",
- org.eclipse.net4j.buffer;version="4.4.100",
- org.eclipse.net4j.channel;version="4.4.100",
- org.eclipse.net4j.connector;version="4.4.100",
- org.eclipse.net4j.protocol;version="4.4.100",
- org.eclipse.net4j.signal;version="4.4.100",
- org.eclipse.net4j.signal.confirmation;version="4.4.100",
- org.eclipse.net4j.signal.heartbeat;version="4.4.100",
- org.eclipse.net4j.signal.security;version="4.4.100",
- org.eclipse.net4j.signal.wrapping;version="4.4.100",
- org.eclipse.spi.net4j;version="4.4.100"
+ org.eclipse.internal.net4j.bundle;version="4.5.0";x-internal:=true,
+ org.eclipse.net4j;version="4.5.0",
+ org.eclipse.net4j.acceptor;version="4.5.0",
+ org.eclipse.net4j.buffer;version="4.5.0",
+ org.eclipse.net4j.channel;version="4.5.0",
+ org.eclipse.net4j.connector;version="4.5.0",
+ org.eclipse.net4j.protocol;version="4.5.0",
+ org.eclipse.net4j.signal;version="4.5.0",
+ org.eclipse.net4j.signal.confirmation;version="4.5.0",
+ org.eclipse.net4j.signal.heartbeat;version="4.5.0",
+ org.eclipse.net4j.signal.security;version="4.5.0",
+ org.eclipse.net4j.signal.wrapping;version="4.5.0",
+ org.eclipse.spi.net4j;version="4.5.0"
 Eclipse-BuddyPolicy: registered
diff --git a/plugins/org.eclipse.net4j/src/org/eclipse/internal/net4j/TransportConfig.java b/plugins/org.eclipse.net4j/src/org/eclipse/internal/net4j/TransportConfig.java
index ec1ce20..9f76570 100644
--- a/plugins/org.eclipse.net4j/src/org/eclipse/internal/net4j/TransportConfig.java
+++ b/plugins/org.eclipse.net4j/src/org/eclipse/internal/net4j/TransportConfig.java
@@ -14,6 +14,7 @@
 import org.eclipse.net4j.buffer.IBufferProvider;
 import org.eclipse.net4j.channel.IChannel;
 import org.eclipse.net4j.protocol.IProtocolProvider;
+import org.eclipse.net4j.util.concurrent.IExecutorServiceProvider;
 import org.eclipse.net4j.util.lifecycle.ILifecycle;
 import org.eclipse.net4j.util.lifecycle.LifecycleUtil;
 import org.eclipse.net4j.util.security.INegotiator;
@@ -24,7 +25,7 @@
 /**
  * @author Eike Stepper
  */
-public class TransportConfig implements ITransportConfig
+public class TransportConfig implements ITransportConfig, IExecutorServiceProvider
 {
   private transient ILifecycle lifecycle;
 
@@ -70,6 +71,11 @@
     this.lifecycle = lifecycle;
   }
 
+  public ExecutorService getExecutorService()
+  {
+    return receiveExecutor;
+  }
+
   public ExecutorService getReceiveExecutor()
   {
     return receiveExecutor;
diff --git a/plugins/org.eclipse.net4j/src/org/eclipse/internal/net4j/buffer/BufferPool.java b/plugins/org.eclipse.net4j/src/org/eclipse/internal/net4j/buffer/BufferPool.java
index ff6a8f1..f1efa17 100644
--- a/plugins/org.eclipse.net4j/src/org/eclipse/internal/net4j/buffer/BufferPool.java
+++ b/plugins/org.eclipse.net4j/src/org/eclipse/internal/net4j/buffer/BufferPool.java
@@ -15,6 +15,7 @@
 import org.eclipse.net4j.buffer.IBufferProvider;
 import org.eclipse.net4j.util.ReflectUtil.ExcludeFromDump;
 import org.eclipse.net4j.util.om.trace.ContextTracer;
+import org.eclipse.net4j.util.ref.CleanableReferenceQueue;
 
 import org.eclipse.internal.net4j.bundle.OM;
 
@@ -42,10 +43,27 @@
   private final Queue<BufferRef> buffers = new ConcurrentLinkedQueue<BufferRef>();
 
   @ExcludeFromDump
-  private final ReferenceQueue<IBuffer> referenceQueue = new ReferenceQueue<IBuffer>();
+  private final CleanableReferenceQueue<IBuffer> referenceQueue = new CleanableReferenceQueue<IBuffer>()
+  {
+    @Override
+    protected Reference<IBuffer> createReference(IBuffer buffer)
+    {
+      return new BufferRef(buffer, this);
+    }
 
-  @ExcludeFromDump
-  private Monitor monitor;
+    @Override
+    protected void cleanReference(Reference<? extends IBuffer> reference)
+    {
+      if (buffers.remove(reference))
+      {
+        --pooledBuffers;
+        if (TRACER.isEnabled())
+        {
+          TRACER.trace("Collected buffer"); //$NON-NLS-1$
+        }
+      }
+    }
+  };
 
   public BufferPool(IBufferProvider provider)
   {
@@ -169,22 +187,6 @@
     ++pooledBuffers;
   }
 
-  @Override
-  protected void doActivate() throws Exception
-  {
-    super.doActivate();
-    monitor = new Monitor();
-    monitor.start();
-  }
-
-  @Override
-  protected void doDeactivate() throws Exception
-  {
-    monitor.interrupt();
-    monitor = null;
-    super.doDeactivate();
-  }
-
   private static final class BufferRef extends SoftReference<IBuffer>
   {
     public BufferRef(IBuffer buffer, ReferenceQueue<IBuffer> queue)
@@ -192,60 +194,4 @@
       super(buffer, queue);
     }
   }
-
-  private final class Monitor extends Thread
-  {
-    public Monitor()
-    {
-      setName("Net4jBufferPoolMonitor"); //$NON-NLS-1$
-      setDaemon(true);
-    }
-
-    @Override
-    public void run()
-    {
-      if (TRACER.isEnabled())
-      {
-        TRACER.trace("Start monitoring"); //$NON-NLS-1$
-      }
-
-      try
-      {
-        while (isActive() && !isInterrupted())
-        {
-          Reference<? extends IBuffer> bufferRef = pollQueue();
-          if (bufferRef != null)
-          {
-            if (buffers.remove(bufferRef))
-            {
-              --pooledBuffers;
-              if (TRACER.isEnabled())
-              {
-                TRACER.trace("Collected buffer"); //$NON-NLS-1$
-              }
-            }
-          }
-        }
-      }
-      catch (InterruptedException ex)
-      {
-        return;
-      }
-      finally
-      {
-        if (TRACER.isEnabled())
-        {
-          TRACER.trace("Stop monitoring"); //$NON-NLS-1$
-        }
-      }
-    }
-
-    /**
-     * Factored out for better profiling.
-     */
-    private Reference<? extends IBuffer> pollQueue() throws InterruptedException
-    {
-      return referenceQueue.remove(5000);
-    }
-  }
 }
diff --git a/plugins/org.eclipse.net4j/src/org/eclipse/net4j/buffer/BufferInputStream.java b/plugins/org.eclipse.net4j/src/org/eclipse/net4j/buffer/BufferInputStream.java
index e3676f8..fd1a9a3 100644
--- a/plugins/org.eclipse.net4j/src/org/eclipse/net4j/buffer/BufferInputStream.java
+++ b/plugins/org.eclipse.net4j/src/org/eclipse/net4j/buffer/BufferInputStream.java
@@ -165,6 +165,11 @@
     buffers = null;
     currentBuffer = null;
     super.close();
+
+    if (ccam)
+    {
+      closeChannel();
+    }
   }
 
   @Override
@@ -219,6 +224,16 @@
     return true;
   }
 
+  /**
+   * Subclasses may override.
+   *
+   * @since 4.5
+   */
+  protected void closeChannel()
+  {
+    // Do nothing.
+  }
+
   private long computeTimeout(final long check) throws IOTimeoutException
   {
     long remaining;
diff --git a/plugins/org.eclipse.net4j/src/org/eclipse/net4j/signal/Signal.java b/plugins/org.eclipse.net4j/src/org/eclipse/net4j/signal/Signal.java
index 52c9920..6fa3eb3 100644
--- a/plugins/org.eclipse.net4j/src/org/eclipse/net4j/signal/Signal.java
+++ b/plugins/org.eclipse.net4j/src/org/eclipse/net4j/signal/Signal.java
@@ -16,6 +16,7 @@
 import org.eclipse.net4j.util.io.ExtendedDataInputStream;
 import org.eclipse.net4j.util.io.ExtendedDataOutputStream;
 import org.eclipse.net4j.util.io.IOTimeoutException;
+import org.eclipse.net4j.util.io.IOUtil;
 import org.eclipse.net4j.util.lifecycle.LifecycleUtil;
 import org.eclipse.net4j.util.om.trace.ContextTracer;
 
@@ -194,6 +195,22 @@
   }
 
   /**
+   * @since 4.5
+   */
+  protected boolean closeInputStreamAfterMe()
+  {
+    return true;
+  }
+
+  /**
+   * @since 4.5
+   */
+  protected boolean closeOutputStreamAfterMe()
+  {
+    return true;
+  }
+
+  /**
    * @since 2.0
    */
   protected InputStream getCurrentInputStream()
@@ -265,6 +282,16 @@
     }
     finally
     {
+      if (closeInputStreamAfterMe())
+      {
+        IOUtil.closeSilent(bufferInputStream);
+      }
+
+      if (closeOutputStreamAfterMe())
+      {
+        IOUtil.closeSilent(bufferOutputStream);
+      }
+
       protocol.stopSignal(this, exception);
     }
   }
@@ -274,11 +301,19 @@
     this.correlationID = correlationID;
   }
 
+  /**
+   * Transfers ownership of the passed stream to this signal.
+   * The signal closes the stream when done reading.
+   */
   void setBufferInputStream(BufferInputStream inputStream)
   {
     bufferInputStream = inputStream;
   }
 
+  /**
+   * Transfers ownership of the passed stream to this signal.
+   * The signal closes the stream when done writing.
+   */
   void setBufferOutputStream(BufferOutputStream outputStream)
   {
     bufferOutputStream = outputStream;
diff --git a/plugins/org.eclipse.net4j/src/org/eclipse/net4j/signal/SignalProtocol.java b/plugins/org.eclipse.net4j/src/org/eclipse/net4j/signal/SignalProtocol.java
index ae28ab0..fdfa654 100644
--- a/plugins/org.eclipse.net4j/src/org/eclipse/net4j/signal/SignalProtocol.java
+++ b/plugins/org.eclipse.net4j/src/org/eclipse/net4j/signal/SignalProtocol.java
@@ -18,7 +18,6 @@
 import org.eclipse.net4j.channel.IChannel;
 import org.eclipse.net4j.connector.IConnector;
 import org.eclipse.net4j.util.WrappedException;
-import org.eclipse.net4j.util.concurrent.ConcurrencyUtil;
 import org.eclipse.net4j.util.event.Event;
 import org.eclipse.net4j.util.event.IEvent;
 import org.eclipse.net4j.util.event.IListener;
@@ -31,7 +30,6 @@
 
 import org.eclipse.internal.net4j.bundle.OM;
 
-import org.eclipse.spi.net4j.InternalChannel;
 import org.eclipse.spi.net4j.Protocol;
 
 import java.io.IOException;
@@ -41,7 +39,6 @@
 import java.text.MessageFormat;
 import java.util.HashMap;
 import java.util.Map;
-import java.util.concurrent.ExecutorService;
 
 /**
  * The default implementation of a {@link ISignalProtocol signal protocol}.
@@ -635,24 +632,10 @@
     }
 
     @Override
-    public int read() throws IOException
+    protected void closeChannel()
     {
-      if (isCCAM())
-      {
-        final InternalChannel channel = (InternalChannel)getChannel();
-
-        ExecutorService executorService = channel.getReceiveExecutor();
-        executorService.submit(new Runnable()
-        {
-          public void run()
-          {
-            ConcurrencyUtil.sleep(500);
-            channel.close();
-          }
-        });
-      }
-
-      return super.read();
+      IChannel channel = getChannel();
+      LifecycleUtil.deactivate(channel);
     }
   }
 
diff --git a/plugins/org.eclipse.net4j/src/org/eclipse/spi/net4j/Channel.java b/plugins/org.eclipse.net4j/src/org/eclipse/spi/net4j/Channel.java
index 451ee5d..10dc6c0 100644
--- a/plugins/org.eclipse.net4j/src/org/eclipse/spi/net4j/Channel.java
+++ b/plugins/org.eclipse.net4j/src/org/eclipse/spi/net4j/Channel.java
@@ -16,8 +16,10 @@
 import org.eclipse.net4j.buffer.IBufferHandler;
 import org.eclipse.net4j.channel.IChannelMultiplexer;
 import org.eclipse.net4j.protocol.IProtocol;
+import org.eclipse.net4j.util.concurrent.ExecutorWorkSerializer;
+import org.eclipse.net4j.util.concurrent.IExecutorServiceProvider;
 import org.eclipse.net4j.util.concurrent.IWorkSerializer;
-import org.eclipse.net4j.util.concurrent.QueueWorkerWorkSerializer;
+import org.eclipse.net4j.util.concurrent.RunnableWithName;
 import org.eclipse.net4j.util.concurrent.SynchronousWorkSerializer;
 import org.eclipse.net4j.util.event.Event;
 import org.eclipse.net4j.util.event.IListener;
@@ -33,6 +35,7 @@
 import java.text.MessageFormat;
 import java.util.Queue;
 import java.util.concurrent.ConcurrentLinkedQueue;
+import java.util.concurrent.Executor;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.atomic.AtomicInteger;
 
@@ -42,7 +45,7 @@
  * @author Eike Stepper
  * @since 2.0
  */
-public class Channel extends Lifecycle implements InternalChannel
+public class Channel extends Lifecycle implements InternalChannel, IExecutorServiceProvider
 {
   private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_CHANNEL, Channel.class);
 
@@ -117,6 +120,14 @@
     this.id = id;
   }
 
+  /**
+   * @since 4.5
+   */
+  public ExecutorService getExecutorService()
+  {
+    return receiveExecutor;
+  }
+
   public ExecutorService getReceiveExecutor()
   {
     return receiveExecutor;
@@ -219,7 +230,9 @@
       }
 
       ++receivedBuffers;
-      receiveSerializer.addWork(createReceiverWork(buffer));
+
+      ReceiverWork receiverWork = createReceiverWork(buffer);
+      receiveSerializer.addWork(receiverWork);
     }
     else
     {
@@ -273,13 +286,14 @@
   {
     super.doActivate();
     sendQueue = new SendQueue();
-    if (receiveExecutor == null)
+    if (receiveExecutor != null)
     {
-      receiveSerializer = new SynchronousWorkSerializer();
+      receiveSerializer = new ReceiveSerializer2(receiveExecutor);
+      LifecycleUtil.activate(receiveSerializer);
     }
     else
     {
-      receiveSerializer = new ReceiveSerializer();
+      receiveSerializer = new SynchronousWorkSerializer();
     }
   }
 
@@ -322,8 +336,10 @@
    *
    * @author Eike Stepper
    * @since 4.1
+   * @deprecated As of 4.4 use {@link ExecutorWorkSerializer}.
    */
-  protected class ReceiveSerializer extends QueueWorkerWorkSerializer
+  @Deprecated
+  protected class ReceiveSerializer extends org.eclipse.net4j.util.concurrent.QueueWorkerWorkSerializer
   {
     @Override
     protected String getThreadName()
@@ -345,8 +361,31 @@
    * If the meaning of this type isn't clear, there really should be more of a description here...
    *
    * @author Eike Stepper
+   * @since 4.4
    */
-  protected class ReceiverWork implements Runnable
+  private class ReceiveSerializer2 extends ExecutorWorkSerializer
+  {
+    public ReceiveSerializer2(Executor executor)
+    {
+      super(executor);
+    }
+
+    @Override
+    protected void noWork()
+    {
+      if (isClosed())
+      {
+        dispose();
+      }
+    }
+  }
+
+  /**
+   * If the meaning of this type isn't clear, there really should be more of a description here...
+   *
+   * @author Eike Stepper
+   */
+  protected class ReceiverWork implements RunnableWithName
   {
     private final IBuffer buffer;
 
@@ -358,6 +397,14 @@
       this.buffer = buffer;
     }
 
+    /**
+     * @since 4.5
+     */
+    public String getName()
+    {
+      return "Net4jReceiveSerializer-" + Channel.this; //$NON-NLS-1$
+    }
+
     public void run()
     {
       IBufferHandler receiveHandler = getReceiveHandler();
diff --git a/plugins/org.eclipse.net4j/src/org/eclipse/spi/net4j/Protocol.java b/plugins/org.eclipse.net4j/src/org/eclipse/spi/net4j/Protocol.java
index f3e3ece..b570c88 100644
--- a/plugins/org.eclipse.net4j/src/org/eclipse/spi/net4j/Protocol.java
+++ b/plugins/org.eclipse.net4j/src/org/eclipse/spi/net4j/Protocol.java
@@ -14,6 +14,7 @@
 import org.eclipse.net4j.channel.IChannel;
 import org.eclipse.net4j.protocol.IProtocol2;
 import org.eclipse.net4j.util.ReflectUtil.ExcludeFromDump;
+import org.eclipse.net4j.util.concurrent.IExecutorServiceProvider;
 import org.eclipse.net4j.util.event.IListener;
 import org.eclipse.net4j.util.lifecycle.ILifecycle;
 import org.eclipse.net4j.util.lifecycle.Lifecycle;
@@ -29,7 +30,8 @@
  * @author Eike Stepper
  * @since 2.0
  */
-public abstract class Protocol<INFRA_STRUCTURE> extends Lifecycle implements IProtocol2<INFRA_STRUCTURE>
+public abstract class Protocol<INFRA_STRUCTURE> extends Lifecycle
+    implements IProtocol2<INFRA_STRUCTURE>, IExecutorServiceProvider
 {
   private String type;