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src/java.base/unix/classes/sun/nio/ch/UnixAsynchronousSocketChannelImpl.java

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rev 14210 : 8154231: Simplify access to System properties from JDK code
Reviewed-by: rriggs


  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.nio.ch;
  27 
  28 import java.nio.channels.*;
  29 import java.nio.ByteBuffer;
  30 import java.net.*;
  31 import java.util.concurrent.*;
  32 import java.io.IOException;
  33 import java.io.FileDescriptor;
  34 import java.security.AccessController;
  35 import sun.net.NetHooks;
  36 import sun.security.action.GetPropertyAction;
  37 
  38 /**
  39  * Unix implementation of AsynchronousSocketChannel
  40  */
  41 
  42 class UnixAsynchronousSocketChannelImpl
  43     extends AsynchronousSocketChannelImpl implements Port.PollableChannel
  44 {
  45     private static final NativeDispatcher nd = new SocketDispatcher();
  46     private static enum OpType { CONNECT, READ, WRITE };
  47 
  48     private static final boolean disableSynchronousRead;
  49     static {
  50         String propValue = AccessController.doPrivileged(
  51             new GetPropertyAction("sun.nio.ch.disableSynchronousRead", "false"));
  52         disableSynchronousRead = (propValue.length() == 0) ?
  53             true : Boolean.valueOf(propValue);
  54     }
  55 
  56     private final Port port;
  57     private final int fdVal;
  58 
  59     // used to ensure that the context for I/O operations that complete
  60     // ascynrhonously is visible to the pooled threads handling I/O events.
  61     private final Object updateLock = new Object();
  62 
  63     // pending connect (updateLock)
  64     private boolean connectPending;
  65     private CompletionHandler<Void,Object> connectHandler;
  66     private Object connectAttachment;
  67     private PendingFuture<Void,Object> connectFuture;
  68 
  69     // pending remote address (stateLock)
  70     private SocketAddress pendingRemote;
  71 




  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.nio.ch;
  27 
  28 import java.nio.channels.*;
  29 import java.nio.ByteBuffer;
  30 import java.net.*;
  31 import java.util.concurrent.*;
  32 import java.io.IOException;
  33 import java.io.FileDescriptor;

  34 import sun.net.NetHooks;
  35 import sun.security.action.GetPropertyAction;
  36 
  37 /**
  38  * Unix implementation of AsynchronousSocketChannel
  39  */
  40 
  41 class UnixAsynchronousSocketChannelImpl
  42     extends AsynchronousSocketChannelImpl implements Port.PollableChannel
  43 {
  44     private static final NativeDispatcher nd = new SocketDispatcher();
  45     private static enum OpType { CONNECT, READ, WRITE };
  46 
  47     private static final boolean disableSynchronousRead;
  48     static {
  49         String propValue = GetPropertyAction
  50                 .getProperty("sun.nio.ch.disableSynchronousRead", "false");
  51         disableSynchronousRead = (propValue.length() == 0) ?
  52             true : Boolean.valueOf(propValue);
  53     }
  54 
  55     private final Port port;
  56     private final int fdVal;
  57 
  58     // used to ensure that the context for I/O operations that complete
  59     // ascynrhonously is visible to the pooled threads handling I/O events.
  60     private final Object updateLock = new Object();
  61 
  62     // pending connect (updateLock)
  63     private boolean connectPending;
  64     private CompletionHandler<Void,Object> connectHandler;
  65     private Object connectAttachment;
  66     private PendingFuture<Void,Object> connectFuture;
  67 
  68     // pending remote address (stateLock)
  69     private SocketAddress pendingRemote;
  70 


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