2006-09-20 Casey Marshall <csm@gnu.org>

	* configure.ac (AC_CHECK_HEADERS): check for `sys/epoll.h.'
	(AC_CHECK_FUNCS): check for `epoll_create.'
	* gnu/java/nio/EpollSelectionKeyImpl.java: new file.
	* gnu/java/nio/EpollSelectorImpl.java: new file.
	* gnu/java/nio/SelectorProviderImpl.java (epoll_failed): new class
	field.
	(openSelector): return epoll selector if requested and available.
	* include/Makefile.am (H_FILES): add gnu_java_nio_EpollSelectorImpl.h.
	(gnu_java_nio_EpollSelectorImpl.h): new target.
	* include/gnu_java_nio_EpollSelectorImpl.h: new file.
	* native/jni/java-nio/Makefile.am (libjavanio_la_SOURCES): add
	gnu_java_nio_EpollSelectorImpl.c.
	* native/jni/java-nio/gnu_java_nio_EpollSelectorImpl.c: new file.

1 files changed, 138 insertions, 0 deletions

diff --git a/gnu/java/nio/EpollSelectionKeyImpl.java b/gnu/java/nio/EpollSelectionKeyImpl.java
new file mode 100644
index 000000000..e163e731d
--- /dev/null
+++ b/gnu/java/nio/EpollSelectionKeyImpl.java
@@ -0,0 +1,138 @@
+/* EpollSelectionKeyImpl.java -- selection key for the epoll selector.
+   Copyright (C) 2006 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.java.nio;
+
+import java.io.IOException;
+import java.nio.channels.CancelledKeyException;
+import java.nio.channels.SelectableChannel;
+import java.nio.channels.SelectionKey;
+import java.nio.channels.Selector;
+
+/**
+ * @author Casey Marshall (csm@gnu.org)
+ */
+public class EpollSelectionKeyImpl extends SelectionKey
+{
+  final int fd;
+  private final EpollSelectorImpl selector;
+  private final SelectableChannel channel;
+  int interestOps;
+  int selectedOps;
+  int key;
+  boolean valid;
+  boolean cancelled;
+  
+  EpollSelectionKeyImpl(EpollSelectorImpl selector,
+                        SelectableChannel channel, int fd)
+  {
+    this.selector = selector;
+    this.channel = channel;
+    this.fd = fd;
+  }
+
+  /* (non-Javadoc)
+   * @see java.nio.channels.SelectionKey#cancel()
+   */
+  public void cancel()
+  {
+    cancelled = true;
+    selector.cancel(this);
+  }
+
+  /* (non-Javadoc)
+   * @see java.nio.channels.SelectionKey#channel()
+   */
+  public SelectableChannel channel()
+  {
+    return channel;
+  }
+
+  /* (non-Javadoc)
+   * @see java.nio.channels.SelectionKey#interestOps()
+   */
+  public int interestOps()
+  {
+    return interestOps;
+  }
+
+  /* (non-Javadoc)
+   * @see java.nio.channels.SelectionKey#interestOps(int)
+   */
+  public SelectionKey interestOps(int ops)
+  {
+    if (cancelled)
+      throw new CancelledKeyException();
+    if ((ops & ~(channel.validOps())) != 0)
+      throw new IllegalArgumentException("unsupported channel ops");
+    try
+      {
+        selector.epoll_modify(this, ops);
+        interestOps = ops;
+      }
+    catch (IOException ioe)
+      {
+        throw new IllegalArgumentException(ioe);
+      }
+    return this;
+  }
+
+  /* (non-Javadoc)
+   * @see java.nio.channels.SelectionKey#isValid()
+   */
+  public boolean isValid()
+  {
+    return valid;
+  }
+
+  /* (non-Javadoc)
+   * @see java.nio.channels.SelectionKey#readyOps()
+   */
+  public int readyOps()
+  {
+    return selectedOps;
+  }
+
+  /* (non-Javadoc)
+   * @see java.nio.channels.SelectionKey#selector()
+   */
+  public Selector selector()
+  {
+    return selector;
+  }
+}