added direct buffer configuration

examples/embedded/src/test/java/org/eclipse/jetty/embedded/GzipHandlerTest.java

@@ -39,11 +39,14 @@ import org.eclipse.jetty.server.Request;
 import org.eclipse.jetty.server.Server;
 import org.eclipse.jetty.server.handler.AbstractHandler;
 import org.eclipse.jetty.server.handler.gzip.GzipHandler;
+import org.eclipse.jetty.toolchain.test.AdvancedRunner;
 import org.eclipse.jetty.util.IO;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
+import org.junit.runner.RunWith;
 
+@RunWith(AdvancedRunner.class)
 public class GzipHandlerTest
 {
     private static String __content =

jetty-fcgi/fcgi-server/src/main/java/org/eclipse/jetty/fcgi/server/HttpTransportOverFCGI.java

@@ -48,6 +48,12 @@ public class HttpTransportOverFCGI implements HttpTransport
         this.request = request;
     }
 
+    @Override
+    public boolean isOptimizedForDirectBuffers()
+    {
+        return false;
+    }
+    
     @Override
     public void send(MetaData.Response info, boolean head, ByteBuffer content, boolean lastContent, Callback callback)
     {

jetty-http2/http2-server/src/main/java/org/eclipse/jetty/http2/server/HttpTransportOverHTTP2.java

@@ -54,6 +54,14 @@ public class HttpTransportOverHTTP2 implements HttpTransport
         this.connection = connection;
     }
 
+    @Override
+    public boolean isOptimizedForDirectBuffers()
+    {
+        // Because sent buffers are passed directly to the endpoint without
+        // copying we can defer to the endpoint
+        return connection.getEndPoint().isOptimizedForDirectBuffers();
+    }
+    
     public IStream getStream()
     {
         return stream;

jetty-io/src/main/java/org/eclipse/jetty/io/AbstractEndPoint.java

@@ -91,6 +91,12 @@ public abstract class AbstractEndPoint extends IdleTimeout implements EndPoint
         _connection = connection;
     }
 
+    @Override
+    public boolean isOptimizedForDirectBuffers()
+    {
+        return false;
+    }
+
     @Override
     public void onOpen()
     {

jetty-io/src/main/java/org/eclipse/jetty/io/ChannelEndPoint.java

@@ -55,6 +55,12 @@ public class ChannelEndPoint extends AbstractEndPoint
         _gathering=_channel instanceof GatheringByteChannel?((GatheringByteChannel)_channel):null;
     }
 
+    @Override
+    public boolean isOptimizedForDirectBuffers()
+    {
+        return true;
+    }
+    
     @Override
     public boolean isOpen()
     {

jetty-io/src/main/java/org/eclipse/jetty/io/EndPoint.java

@@ -237,5 +237,10 @@ public interface EndPoint extends Closeable
      */
     void onClose();
 
+    /** Is the endpoint optimized for DirectBuffer usage
+     * @return True if direct buffers can be used optimally.
+     */
+    boolean isOptimizedForDirectBuffers();
+
     
 }

jetty-io/src/main/java/org/eclipse/jetty/io/ssl/SslConnection.java

@@ -85,7 +85,7 @@ public class SslConnection extends AbstractConnection
     private ByteBuffer _decryptedInput;
     private ByteBuffer _encryptedInput;
     private ByteBuffer _encryptedOutput;
-    private final boolean _encryptedDirectBuffers = false;
+    private final boolean _encryptedDirectBuffers = true;
     private final boolean _decryptedDirectBuffers = false;
     private boolean _renegotiationAllowed;
     private final Runnable _runCompletWrite = new Runnable()

jetty-server/src/main/java/org/eclipse/jetty/server/HttpChannel.java

@@ -186,6 +186,12 @@ public class HttpChannel implements Runnable, HttpOutput.Interceptor
         return _configuration;
     }
 
+    @Override
+    public boolean isOptimizedForDirectBuffers()
+    {
+        return getHttpTransport().isOptimizedForDirectBuffers();
+    }
+
     public Server getServer()
     {
         return _connector.getServer();

jetty-server/src/main/java/org/eclipse/jetty/server/HttpConnection.java

@@ -152,6 +152,12 @@ public class HttpConnection extends AbstractConnection implements Runnable, Http
         return _generator;
     }
 
+    @Override
+    public boolean isOptimizedForDirectBuffers()
+    {
+        return getEndPoint().isOptimizedForDirectBuffers();
+    }
+
     @Override
     public int getMessagesIn()
     {

jetty-server/src/main/java/org/eclipse/jetty/server/HttpOutput.java

@@ -58,13 +58,14 @@ public class HttpOutput extends ServletOutputStream implements Runnable
     {
         void write(ByteBuffer content, boolean complete, Callback callback);
         Interceptor getNextInterceptor();
+        boolean isOptimizedForDirectBuffers();
     }
     
     private static Logger LOG = Log.getLogger(HttpOutput.class);
 
     private final HttpChannel _channel;
     private final SharedBlockingCallback _writeBlock;
-    private Interceptor _filter;
+    private Interceptor _interceptor;
     
     /** Bytes written via the write API (excludes bytes written via sendContent). Used to autocommit once content length is written. */
     private long _written;
@@ -90,7 +91,7 @@ public class HttpOutput extends ServletOutputStream implements Runnable
     public HttpOutput(HttpChannel channel)
     {
         _channel = channel;
-        _filter = channel;
+        _interceptor = channel;
         _writeBlock = new SharedBlockingCallback()
         {
             @Override
@@ -111,12 +112,12 @@ public class HttpOutput extends ServletOutputStream implements Runnable
 
     public Interceptor getInterceptor()
     {
-        return _filter;
+        return _interceptor;
     }
 
     public void setInterceptor(Interceptor filter)
     {
-        _filter=filter;
+        _interceptor=filter;
     }
     
     public boolean isWritten()
@@ -162,7 +163,7 @@ public class HttpOutput extends ServletOutputStream implements Runnable
 
     protected void write(ByteBuffer content, boolean complete, Callback callback)
     {
-        _filter.write(content, complete, callback);
+        _interceptor.write(content, complete, callback);
     }
 
     private void abort(Throwable failure)
@@ -336,7 +337,7 @@ public class HttpOutput extends ServletOutputStream implements Runnable
                     if (!complete && len<=_commitSize)
                     {
                         if (_aggregate == null)
-                            _aggregate = _channel.getByteBufferPool().acquire(getBufferSize(), false);
+                            _aggregate = _channel.getByteBufferPool().acquire(getBufferSize(), _interceptor.isOptimizedForDirectBuffers());
 
                         // YES - fill the aggregate with content from the buffer
                         int filled = BufferUtil.fill(_aggregate, b, off, len);
@@ -381,7 +382,7 @@ public class HttpOutput extends ServletOutputStream implements Runnable
         if (!complete && len<=_commitSize)
         {
             if (_aggregate == null)
-                _aggregate = _channel.getByteBufferPool().acquire(capacity, false);
+                _aggregate = _channel.getByteBufferPool().acquire(capacity, _interceptor.isOptimizedForDirectBuffers());
 
             // YES - fill the aggregate with content from the buffer
             int filled = BufferUtil.fill(_aggregate, b, off, len);
@@ -509,7 +510,7 @@ public class HttpOutput extends ServletOutputStream implements Runnable
             {
                 case OPEN:
                     if (_aggregate == null)
-                        _aggregate = _channel.getByteBufferPool().acquire(getBufferSize(), false);
+                        _aggregate = _channel.getByteBufferPool().acquire(getBufferSize(), _interceptor.isOptimizedForDirectBuffers());
                     BufferUtil.append(_aggregate, (byte)b);
 
                     // Check if all written or full
@@ -529,7 +530,7 @@ public class HttpOutput extends ServletOutputStream implements Runnable
                         continue;
 
                     if (_aggregate == null)
-                        _aggregate = _channel.getByteBufferPool().acquire(getBufferSize(), false);
+                        _aggregate = _channel.getByteBufferPool().acquire(getBufferSize(), _interceptor.isOptimizedForDirectBuffers());
                     BufferUtil.append(_aggregate, (byte)b);
 
                     // Check if all written or full
@@ -795,7 +796,7 @@ public class HttpOutput extends ServletOutputStream implements Runnable
     public void recycle()
     {
         resetBuffer();
-        _filter=_channel;
+        _interceptor=_channel;
     }
     
     public void resetBuffer()

jetty-server/src/main/java/org/eclipse/jetty/server/HttpTransport.java

@@ -23,6 +23,10 @@ import java.nio.ByteBuffer;
 import org.eclipse.jetty.http.MetaData;
 import org.eclipse.jetty.util.Callback;
 
+
+/* ------------------------------------------------------------ */
+/** Abstraction of the outbound HTTP transport.
+ */
 public interface HttpTransport
 {    
     void send(MetaData.Response info, boolean head, ByteBuffer content, boolean lastContent, Callback callback);
@@ -47,4 +51,10 @@ public interface HttpTransport
      * @param failure the failure that caused the abort.
      */
     void abort(Throwable failure);
+
+    /* ------------------------------------------------------------ */
+    /** Is the underlying transport optimized for DirectBuffer usage
+     * @return True if direct buffers can be used optimally.
+     */
+    boolean isOptimizedForDirectBuffers();
 }

jetty-server/src/main/java/org/eclipse/jetty/server/ProxyConnectionFactory.java

@@ -232,6 +232,12 @@ public class ProxyConnectionFactory extends AbstractConnectionFactory
             _remote=remote;
             _local=local;
         }
+
+        @Override
+        public boolean isOptimizedForDirectBuffers()
+        {
+            return _endp.isOptimizedForDirectBuffers();
+        }
         
         public InetSocketAddress getLocalAddress()
         {

jetty-server/src/main/java/org/eclipse/jetty/server/handler/gzip/GzipHandler.java

@@ -37,7 +37,6 @@ import org.eclipse.jetty.http.HttpMethod;
 import org.eclipse.jetty.http.HttpVersion;
 import org.eclipse.jetty.http.MimeTypes;
 import org.eclipse.jetty.http.PathMap;
-import org.eclipse.jetty.server.HttpChannel;
 import org.eclipse.jetty.server.HttpOutput;
 import org.eclipse.jetty.server.Request;
 import org.eclipse.jetty.server.handler.HandlerWrapper;
@@ -51,7 +50,7 @@ import org.eclipse.jetty.util.log.Logger;
 /**
  * A Handler that can dynamically GZIP compress responses.   Unlike 
  * previous and 3rd party GzipFilters, this mechanism works with asynchronously
- * generated responses and does not need to wrap the response or it's ownput
+ * generated responses and does not need to wrap the response or it's output
  * stream.  Instead it uses the efficient {@link HttpOutput.Interceptor} mechanism.
  * <p>
  * The handler can be applied to the entire server (a gzip.mod is included in

jetty-server/src/main/java/org/eclipse/jetty/server/handler/gzip/GzipHttpOutputInterceptor.java

@@ -84,6 +84,13 @@ public class GzipHttpOutputInterceptor implements HttpOutput.Interceptor
         return _interceptor;
     }
     
+    @Override
+    public boolean isOptimizedForDirectBuffers()
+    {
+        return false; // No point as deflator is in user space.
+    }
+    
+    
     @Override
     public void write(ByteBuffer content, boolean complete, Callback callback)
     {
@@ -133,12 +140,7 @@ public class GzipHttpOutputInterceptor implements HttpOutput.Interceptor
     private void gzip(ByteBuffer content, boolean complete, final Callback callback)
     {
         if (content.hasRemaining() || complete)
-        {
+            new GzipBufferCB(content,complete,callback).iterate();
-            if (content.hasArray())
-                new GzipArrayCB(content,complete,callback).iterate();
-            else
-                new GzipBufferCB(content,complete,callback).iterate();
-        }
         else
             callback.succeeded();
     }
@@ -215,7 +217,6 @@ public class GzipHttpOutputInterceptor implements HttpOutput.Interceptor
                 fields.put(HttpHeader.ETAG,etag);
             }
             
-            
             LOG.debug("{} compressing {}",this,_deflater);
             _state.set(GZState.COMPRESSING);
             
@@ -270,67 +271,15 @@ public class GzipHttpOutputInterceptor implements HttpOutput.Interceptor
     {
         return _state.get()==GZState.MIGHT_COMPRESS;
     }
-    private class GzipArrayCB extends IteratingNestedCallback
-    {        
-        private final boolean _complete;
-        public GzipArrayCB(ByteBuffer content, boolean complete, Callback callback)
-        {
-            super(callback);
-            _complete=complete;
-
-             byte[] array=content.array();
-             int off=content.arrayOffset()+content.position();
-             int len=content.remaining();
-             _crc.update(array,off,len);
-             _deflater.setInput(array,off,len);
-             if (complete)
-                 _deflater.finish();
-             content.position(content.limit());
-        }
-
-        @Override
-        protected Action process() throws Exception
-        {
-            if (_deflater.needsInput())
-            {
-                if (_deflater.finished())
-                {
-                    _factory.recycle(_deflater);
-                    _deflater=null;
-                    _channel.getByteBufferPool().release(_buffer);
-                    _buffer=null;
-                    return Action.SUCCEEDED;
-                }
-
-                if (!_complete)
-                    return Action.SUCCEEDED;
-                
-                _deflater.finish();
-            }
-
-            BufferUtil.compact(_buffer);
-            int off=_buffer.arrayOffset()+_buffer.limit();
-            int len=_buffer.capacity()-_buffer.limit()- (_complete?8:0);
-            int produced=_deflater.deflate(_buffer.array(),off,len,Deflater.NO_FLUSH);
-            _buffer.limit(_buffer.limit()+produced);
-            boolean complete=_deflater.finished();
-            if (complete)
-                addTrailer();
-            
-            _interceptor.write(_buffer,complete,this);
-            return Action.SCHEDULED;
-        }
-    }
     
     private class GzipBufferCB extends IteratingNestedCallback
     {        
-        private final ByteBuffer _input;
+        private ByteBuffer _copy;
         private final ByteBuffer _content;
         private final boolean _last;
         public GzipBufferCB(ByteBuffer content, boolean complete, Callback callback)
         {
             super(callback);
-            _input=_channel.getByteBufferPool().acquire(Math.min(_bufferSize,content.remaining()),false);
             _content=content;
             _last=complete;
         }
@@ -348,6 +297,11 @@ public class GzipHttpOutputInterceptor implements HttpOutput.Interceptor
                         _deflater=null;
                         _channel.getByteBufferPool().release(_buffer);
                         _buffer=null;
+                        if (_copy!=null)
+                        {
+                            _channel.getByteBufferPool().release(_copy);
+                            _copy=null;
+                        }
                         return Action.SUCCEEDED;
                     }
                     
@@ -358,17 +312,31 @@ public class GzipHttpOutputInterceptor implements HttpOutput.Interceptor
                     
                     _deflater.finish();
                 }
+                else if (_content.hasArray())
+                {
+                    byte[] array=_content.array();
+                    int off=_content.arrayOffset()+_content.position();
+                    int len=_content.remaining();
+                    BufferUtil.clear(_content);
+                    
+                    _crc.update(array,off,len);
+                    _deflater.setInput(array,off,len);                
+                    if (_last)
+                        _deflater.finish();
+                }
                 else
                 {
-                    BufferUtil.clearToFill(_input);
+                    if (_copy==null)
-                    int took=BufferUtil.put(_content,_input);
+                        _copy=_channel.getByteBufferPool().acquire(_bufferSize,false);
-                    BufferUtil.flipToFlush(_input,0);
+                    BufferUtil.clearToFill(_copy);
+                    int took=BufferUtil.put(_content,_copy);
+                    BufferUtil.flipToFlush(_copy,0);
                     if (took==0)
                         throw new IllegalStateException();
                    
-                    byte[] array=_input.array();
+                    byte[] array=_copy.array();
-                    int off=_input.arrayOffset()+_input.position();
+                    int off=_copy.arrayOffset()+_copy.position();
-                    int len=_input.remaining();
+                    int len=_copy.remaining();
 
                     _crc.update(array,off,len);
                     _deflater.setInput(array,off,len);                

jetty-server/src/test/java/org/eclipse/jetty/server/ResponseTest.java

@@ -110,6 +110,11 @@ public class ResponseTest
             {
             }
 
+            @Override
+            public boolean isOptimizedForDirectBuffers()
+            {
+                return false;
+            }
         });
     }
 

jetty-servlet/src/test/java/org/eclipse/jetty/servlet/AsyncIOServletTest.java

@@ -26,6 +26,7 @@ import java.net.Socket;
 import java.nio.charset.StandardCharsets;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import javax.servlet.AsyncContext;
@@ -518,8 +519,6 @@ public class AsyncIOServletTest
                 
                 in.setReadListener(new ReadListener()
                 {
-                    transient int _i=0;
-                    
                     @Override
                     public void onError(Throwable t)
                     {
@@ -575,6 +574,8 @@ public class AsyncIOServletTest
         {
             OutputStream output = client.getOutputStream();
             output.write(request.getBytes("UTF-8"));
+            output.flush();
+            Thread.sleep(100);
             output.write(data);
             output.flush();
 

jetty-spdy/spdy-http-server/src/main/java/org/eclipse/jetty/spdy/server/http/HttpTransportOverSPDY.java

@@ -80,6 +80,12 @@ public class HttpTransportOverSPDY implements HttpTransport
         this.version = session.getVersion();
     }
 
+    @Override
+    public boolean isOptimizedForDirectBuffers()
+    {
+        return false;
+    }
+
     protected Stream getStream()
     {
         return stream;