1 /*
   2  * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  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.util.concurrent.*;
  30 import java.nio.ByteBuffer;
  31 import java.nio.BufferOverflowException;
  32 import java.io.IOException;
  33 import java.io.FileDescriptor;
  34 import jdk.internal.misc.SharedSecrets;
  35 import jdk.internal.misc.JavaIOFileDescriptorAccess;
  36 
  37 /**
  38  * Windows implementation of AsynchronousFileChannel using overlapped I/O.
  39  */
  40 
  41 public class WindowsAsynchronousFileChannelImpl
  42     extends AsynchronousFileChannelImpl
  43     implements Iocp.OverlappedChannel, Groupable
  44 {
  45     private static final JavaIOFileDescriptorAccess fdAccess =
  46         SharedSecrets.getJavaIOFileDescriptorAccess();
  47 
  48     // error when EOF is detected asynchronously.
  49     private static final int ERROR_HANDLE_EOF = 38;
  50 
  51     // Lazy initialization of default I/O completion port
  52     private static class DefaultIocpHolder {
  53         static final Iocp defaultIocp = defaultIocp();
  54         private static Iocp defaultIocp() {
  55             try {

   1 /*
   2  * Copyright (c) 2008, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  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.util.concurrent.*;
  30 import java.nio.ByteBuffer;
  31 import java.nio.BufferOverflowException;
  32 import java.io.IOException;
  33 import java.io.FileDescriptor;
  34 import jdk.internal.access.SharedSecrets;
  35 import jdk.internal.access.JavaIOFileDescriptorAccess;
  36 
  37 /**
  38  * Windows implementation of AsynchronousFileChannel using overlapped I/O.
  39  */
  40 
  41 public class WindowsAsynchronousFileChannelImpl
  42     extends AsynchronousFileChannelImpl
  43     implements Iocp.OverlappedChannel, Groupable
  44 {
  45     private static final JavaIOFileDescriptorAccess fdAccess =
  46         SharedSecrets.getJavaIOFileDescriptorAccess();
  47 
  48     // error when EOF is detected asynchronously.
  49     private static final int ERROR_HANDLE_EOF = 38;
  50 
  51     // Lazy initialization of default I/O completion port
  52     private static class DefaultIocpHolder {
  53         static final Iocp defaultIocp = defaultIocp();
  54         private static Iocp defaultIocp() {
  55             try {