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Diffstat (limited to 'libjava/gnu/java/nio/PipeImpl.java')
| -rw-r--r-- | libjava/gnu/java/nio/PipeImpl.java | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/libjava/gnu/java/nio/PipeImpl.java b/libjava/gnu/java/nio/PipeImpl.java new file mode 100644 index 000000000..cccaa3988 --- /dev/null +++ b/libjava/gnu/java/nio/PipeImpl.java @@ -0,0 +1,178 @@ +/* PipeImpl.java -- + Copyright (C) 2002, 2003, 2004, 2005 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.ByteBuffer; +import java.nio.channels.Pipe; +import java.nio.channels.spi.SelectorProvider; + +class PipeImpl extends Pipe +{ + public static final class SourceChannelImpl extends Pipe.SourceChannel + { + private int native_fd; + private VMChannel vmch; + + public SourceChannelImpl (SelectorProvider selectorProvider, + int native_fd) + { + super (selectorProvider); + this.native_fd = native_fd; + vmch = VMChannel.getVMChannel(this); + } + + protected final void implCloseSelectableChannel() + throws IOException + { + throw new Error ("Not implemented"); + } + + protected void implConfigureBlocking (boolean blocking) + throws IOException + { + vmch.setBlocking(blocking); + } + + public final int read (ByteBuffer src) + throws IOException + { + return vmch.read(src); + } + + public final long read (ByteBuffer[] srcs) + throws IOException + { + return vmch.readScattering(srcs, 0, srcs.length); + } + + public final synchronized long read (ByteBuffer[] srcs, int offset, + int len) + throws IOException + { + if (offset < 0 + || offset > srcs.length + || len < 0 + || len > srcs.length - offset) + throw new IndexOutOfBoundsException(); + + return vmch.readScattering(srcs, offset, len); + } + + public final int getNativeFD() + { + return native_fd; + } + } + + public static final class SinkChannelImpl extends Pipe.SinkChannel + { + private int native_fd; + private VMChannel vmch; + + public SinkChannelImpl (SelectorProvider selectorProvider, + int native_fd) + { + super (selectorProvider); + this.native_fd = native_fd; + vmch = VMChannel.getVMChannel(this); + } + + protected final void implCloseSelectableChannel() + throws IOException + { + throw new Error ("Not implemented"); + } + + protected final void implConfigureBlocking (boolean blocking) + throws IOException + { + vmch.setBlocking(blocking); + } + + public final int write (ByteBuffer dst) + throws IOException + { + return vmch.write(dst); + } + + public final long write (ByteBuffer[] srcs) + throws IOException + { + return vmch.writeGathering(srcs, 0, srcs.length); + } + + public final synchronized long write (ByteBuffer[] srcs, int offset, int len) + throws IOException + { + if (offset < 0 + || offset > srcs.length + || len < 0 + || len > srcs.length - offset) + throw new IndexOutOfBoundsException(); + + return vmch.writeGathering(srcs, offset, len); + } + + public final int getNativeFD() + { + return native_fd; + } + } + + private SinkChannelImpl sink; + private SourceChannelImpl source; + + public PipeImpl (SelectorProvider provider) + throws IOException + { + super(); + VMPipe.init (this, provider); + } + + public Pipe.SinkChannel sink() + { + return sink; + } + + public Pipe.SourceChannel source() + { + return source; + } +} |