io.netty.channel.unix.FileDescriptor Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* Copyright 2015 The Netty Project
*
* The Netty Project licenses this file to you 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 io.netty.channel.unix;
import java.io.IOException;
/**
* Native {@link FileDescriptor} implementation which allows to wrap an {@code int} and provide a
* {@link FileDescriptor} for it.
*/
public class FileDescriptor {
private final int fd;
private volatile boolean open = true;
public FileDescriptor(int fd) {
if (fd < 0) {
throw new IllegalArgumentException("fd must be >= 0");
}
this.fd = fd;
}
/**
* Return the int value of the filedescriptor.
*/
public int intValue() {
return fd;
}
/**
* Close the file descriptor.
*/
public void close() throws IOException {
open = false;
close(fd);
}
/**
* Returns {@code true} if the file descriptor is open.
*/
public boolean isOpen() {
return open;
}
@Override
public String toString() {
return "FileDescriptor{" +
"fd=" + fd +
'}';
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof FileDescriptor)) {
return false;
}
return fd == ((FileDescriptor) o).fd;
}
@Override
public int hashCode() {
return fd;
}
private static native int close(int fd);
}