| /* |
| * Copyright (c) 2007, 2008, 2011, 2012, 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.buffer; |
| |
| /** |
| * Provides clients with the ability to obtain and retain pooled {@link IBuffer}s. |
| * |
| * @author Eike Stepper |
| */ |
| public interface IBufferPool extends IBufferProvider |
| { |
| /** |
| * Tries to remove a single buffer from this <code>BufferPool</code> and {@link IBuffer#release() release} it. |
| * |
| * @return <code>true</code> if a buffer could be evicted, <code>false</code> otherwise. |
| */ |
| public boolean evictOne(); |
| |
| /** |
| * Tries to remove as many buffers from this <code>BufferPool</code> and {@link IBuffer#release() release} them as are |
| * needed to let a given maximum number of buffers survive in the pool. |
| * |
| * @return The number of buffers that could be evicted. |
| */ |
| public int evict(int survivors); |
| |
| /** |
| * Offers additional introspection features for {@link IBufferPool}s. |
| * |
| * @author Eike Stepper |
| */ |
| public interface Introspection extends IBufferPool, IBufferProvider.Introspection |
| { |
| /** |
| * Returns the number of buffers that are currently pooled in this <code>BufferPool</code>. |
| */ |
| public int getPooledBuffers(); |
| } |
| } |