org.newsclub.net.unix.rmi.RemoteFileDescriptor Maven / Gradle / Ivy
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/*
* junixsocket
*
* Copyright 2009-2024 Christian Kohlschütter
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.newsclub.net.unix.rmi;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.ObjectInput;
/**
* A generic (unspecific) {@link FileDescriptor} reference.
*
* @author Christian Kohlschütter
* @see RemoteFileInput
* @see RemoteFileOutput
*/
public final class RemoteFileDescriptor extends RemoteFileDescriptorBase {
private static final long serialVersionUID = 1L;
/**
* Creates an uninitialized instance; used for externalization.
*
* @see #readExternal(ObjectInput)
*/
public RemoteFileDescriptor() {
super();
}
/**
* Creates a new {@link RemoteFileOutput} instance, encapsulating a generic {@link FileDescriptor}
* so that it can be shared with other processes via RMI.
*
* @param socketFactory The socket factory.
* @param fd The {@link FileDescriptor}.
*/
public RemoteFileDescriptor(AFUNIXRMISocketFactory socketFactory, FileDescriptor fd) {
super(socketFactory, null, fd, MAGIC_VALUE_MASK | 0);
}
@Override
public synchronized void close() throws IOException {
FileDescriptor fd = getFileDescriptor();
if (fd != null && fd.valid()) {
try (FileInputStream unused = new FileInputStream(fd)) {
// should succeed
}
}
}
}