org.scijava.nativelib.DefaultJniExtractor Maven / Gradle / Ivy
/*
* #%L
* Native library loader for extracting and loading native libraries from Java.
* %%
* Copyright (C) 2010 - 2015 Board of Regents of the University of
* Wisconsin-Madison and Glencoe Software, Inc.
* %%
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* #L%
*/
// This code is derived from Richard van der Hoff's mx-native-loader project:
// http://opensource.mxtelecom.com/maven/repo/com/wapmx/native/mx-native-loader/1.7/
// See NOTICE.txt for details.
// Copyright 2009 MX Telecom Ltd
package org.scijava.nativelib;
import java.io.File;
import java.io.IOException;
/**
* JniExtractor suitable for single application deployments per virtual machine
*
* WARNING: This extractor can result in UnsatisifiedLinkError if it is used in
* more than one classloader.
*
* @author Richard van der Hoff ([email protected])
*/
public class DefaultJniExtractor extends BaseJniExtractor {
/**
* this is where native dependencies are extracted to (e.g. tmplib/).
*/
private File nativeDir;
public DefaultJniExtractor(final Class libraryJarClass) throws IOException {
super(libraryJarClass);
nativeDir = getTempDir();
// Order of operations is such that we do not error if we are racing with
// another thread to create the directory.
nativeDir.mkdirs();
if (!nativeDir.isDirectory()) {
throw new IOException(
"Unable to create native library working directory " + nativeDir);
}
nativeDir.deleteOnExit();
}
@Override
public File getJniDir() {
return nativeDir;
}
@Override
public File getNativeDir() {
return nativeDir;
}
}