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package gnu.java.nio;
import java.io.*;
import java.nio.*;
import java.nio.channels.*;
public class FileChannelImpl extends FileChannel
{
public long address, length;
public int fd;
public MappedByteBuffer buf;
public Object file_obj; // just to keep it live...
public FileChannelImpl(int fd,
Object obj)
{
this.fd = fd;
this.file_obj = obj;
}
public FileChannelImpl(FileDescriptor fd,
Object obj)
{
//this(fd.getNativeFD(), obj);
this(0, obj);
System.err.println("we need to get the native file-des here !\n");
}
public boolean isOpen()
{
// FIXME
return fd != 0;
}
public void close()
{
}
public int read(java.nio.ByteBuffer dst) throws IOException
{
System.out.println("in here-1");
return 0;
}
public int write(java.nio.ByteBuffer src) throws IOException
{
System.out.println("in here-2");
return 0;
}
public long write(java.nio.ByteBuffer[] srcs,
int offset,
int length) throws IOException
{
System.out.println("in here-3");
return 0;
}
static native long nio_mmap_file(int fd,
long pos,
int size,
int mode);
static native void nio_unmmap_file(int fd,
long pos,
int size);
public MappedByteBuffer map(java.nio.channels.FileChannel.MapMode mode,
long position,
int size) throws IOException
{
int cmode = 0;
address = nio_mmap_file(fd, position, size, cmode);
buf = new MappedByteFileBuffer(this);
return buf;
}
static MappedByteBuffer create_direct_mapped_buffer(long address,
long length)
{
FileChannelImpl ch = new FileChannelImpl(-1, null);
ch.address = address;
ch.length = length;
ch.buf = new MappedByteFileBuffer(ch);
return ch.buf;
}
}
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