1 files changed, 69 insertions, 0 deletions
diff --git a/plugins/org.eclipse.net4j/src/org/eclipse/internal/net4j/buffer/BufferProvider.java b/plugins/org.eclipse.net4j/src/org/eclipse/internal/net4j/buffer/BufferProvider.java
new file mode 100644
index 0000000000..7a9f2c67fe
--- /dev/null
+++ b/plugins/org.eclipse.net4j/src/org/eclipse/internal/net4j/buffer/BufferProvider.java
@@ -0,0 +1,69 @@
+/***************************************************************************
+ * Copyright (c) 2004 - 2008 Eike Stepper, Germany.
+ * 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.internal.net4j.buffer;
+
+import org.eclipse.net4j.buffer.IBuffer;
+import org.eclipse.net4j.buffer.IBufferProvider;
+import org.eclipse.net4j.internal.util.lifecycle.Lifecycle;
+
+/**
+ * @author Eike Stepper
+ */
+public abstract class BufferProvider extends Lifecycle implements IBufferProvider, IBufferProvider.Introspection
+{
+  private short bufferCapacity;
+
+  private long providedBuffers;
+
+  private long retainedBuffers;
+
+  public BufferProvider(short bufferCapacity)
+  {
+    this.bufferCapacity = bufferCapacity;
+  }
+
+  public final long getProvidedBuffers()
+  {
+    return providedBuffers;
+  }
+
+  public final long getRetainedBuffers()
+  {
+    return retainedBuffers;
+  }
+
+  public final short getBufferCapacity()
+  {
+    return bufferCapacity;
+  }
+
+  public final IBuffer provideBuffer()
+  {
+    ++providedBuffers;
+    return doProvideBuffer();
+  }
+
+  public final void retainBuffer(IBuffer buffer)
+  {
+    ++retainedBuffers;
+    doRetainBuffer(buffer);
+  }
+
+  @Override
+  public String toString()
+  {
+    return "BufferProvider[capacity=" + bufferCapacity + "]"; //$NON-NLS-1$ //$NON-NLS-2$
+  }
+
+  protected abstract IBuffer doProvideBuffer();
+
+  protected abstract void doRetainBuffer(IBuffer buffer);
+}