关于Quick Server的Object Pool解读

  Quick Server (1.4.6 版本)的对象池是交给org.quickserver.net.server.PoolManager管理的，框架中其唯一的实现类是org.quickserver.net.server.impl.BasicPoolManager。
   先看下quick server的配置文件中关于 object-pool的配置项：

<object-pool>
<max-active>..</max-active>
<max-idle>..</max-idle>
<init-size>..</init-size>
<thread-object-pool>
..		
</thread-object-pool>
<client-handler-object-pool>
..
</client-handler-object-pool>
<byte-buffer-object-pool>
..
</byte-buffer-object-pool>		
<client-data-object-pool>
..
</client-data-object-pool>
</object-pool>

其中可配置4种对象池，如果不对4种池专门配置，则共享<object-pool>的max-active、max-idle、init-size参数值。4种池是相互独立的。看BasicPoolManager源码：

public ObjectPool makeByteBufferPool(PoolableObjectFactory factory, PoolConfig opConfig)
/*    */   {
/* 36 */     GenericObjectPool.Config bconfig = new GenericObjectPool.Config();
/* 37 */     bconfig.maxActive = opConfig.getMaxActive();
/* 38 */     bconfig.maxIdle = opConfig.getMaxIdle();
/* 39 */     bconfig.whenExhaustedAction = 1;
/* 40 */     return new GenericObjectPool(factory, bconfig);
/*    */   }
/*    */ 
/*    */   public ObjectPool makeClientPool(PoolableObjectFactory factory, PoolConfig opConfig)
/*    */   {
/* 45 */     GenericObjectPool.Config bconfig = new GenericObjectPool.Config();
/* 46 */     bconfig.maxActive = opConfig.getMaxActive();
/* 47 */     bconfig.maxIdle = opConfig.getMaxIdle();
/* 48 */     bconfig.whenExhaustedAction = 0;
/* 49 */     return new GenericObjectPool(factory, bconfig);
/*    */   }
/*    */ 
/*    */   public ObjectPool makeClientHandlerPool(PoolableObjectFactory factory, PoolConfig opConfig)
/*    */   {
/* 54 */     GenericObjectPool.Config bconfig = new GenericObjectPool.Config();
/* 55 */     bconfig.maxActive = opConfig.getMaxActive();
/* 56 */     bconfig.maxIdle = opConfig.getMaxIdle();
/*    */ 
/* 58 */     bconfig.whenExhaustedAction = 0;
/* 59 */     return new GenericObjectPool(factory, bconfig);
/*    */   }
/*    */ 
/*    */   public ObjectPool makeClientDataPool(PoolableObjectFactory factory, PoolConfig opConfig)
/*    */   {
/* 64 */     GenericObjectPool.Config bconfig = new GenericObjectPool.Config();
/* 65 */     bconfig.maxActive = opConfig.getMaxActive();
/* 66 */     bconfig.maxIdle = opConfig.getMaxIdle();
/* 67 */     bconfig.whenExhaustedAction = 0;
/* 68 */     return new GenericObjectPool(factory, bconfig);
/*    */   }

ClientPool，ClientHandlerPool，ClientDataPool，ByteBufferPool4种池对象都是org.apache.commons.pool.impl.GenericObjectPool的实例。GenericObjectPool是抽象类BaseObjectPool的子类，其池基于org.apache.commons.collections.CursorableLinkedList实现，是List的一个实现。