hadoop NativeIOException 源码
haddop NativeIOException 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/nativeio/NativeIOException.java
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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 org.apache.hadoop.io.nativeio;
import java.io.IOException;
import org.apache.hadoop.util.Shell;
/**
* An exception generated by a call to the native IO code.
*
* These exceptions simply wrap <i>errno</i> result codes on Linux,
* or the System Error Code on Windows.
*/
public class NativeIOException extends IOException {
private static final long serialVersionUID = 1L;
private Errno errno;
// Java has no unsigned primitive error code. Use a signed 32-bit
// integer to hold the unsigned 32-bit integer.
private int errorCode;
public NativeIOException(String msg, Errno errno) {
super(msg);
this.errno = errno;
// Windows error code is always set to ERROR_SUCCESS on Linux,
// i.e. no failure on Windows
this.errorCode = 0;
}
public NativeIOException(String msg, int errorCode) {
super(msg);
this.errorCode = errorCode;
this.errno = Errno.UNKNOWN;
}
public long getErrorCode() {
return errorCode;
}
public Errno getErrno() {
return errno;
}
@Override
public String toString() {
if (Shell.WINDOWS)
return errorCode + ": " + super.getMessage();
else
return errno.toString() + ": " + super.getMessage();
}
}
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