forked from java-native-access/jna
/
JNALoadTest.java
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JNALoadTest.java
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/* Copyright (c) 2007-2009 Timothy Wall, All Rights Reserved
*
* The contents of this file is dual-licensed under 2
* alternative Open Source/Free licenses: LGPL 2.1 or later and
* Apache License 2.0. (starting with JNA version 4.0.0).
*
* You can freely decide which license you want to apply to
* the project.
*
* You may obtain a copy of the LGPL License at:
*
* http://www.gnu.org/licenses/licenses.html
*
* A copy is also included in the downloadable source code package
* containing JNA, in file "LGPL2.1".
*
* You may obtain a copy of the Apache License at:
*
* http://www.apache.org/licenses/
*
* A copy is also included in the downloadable source code package
* containing JNA, in file "AL2.0".
*/
package com.sun.jna;
import java.io.File;
import java.lang.ref.Reference;
import java.lang.ref.WeakReference;
import java.lang.reflect.Field;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Properties;
import junit.framework.TestCase;
import org.junit.Assume;
/** Test loading and unloading native support from various locations. Note
* that no JNI classes are directly referenced in these tests.
*/
public class JNALoadTest extends TestCase implements Paths {
private class TestLoader extends URLClassLoader {
public TestLoader(boolean fromJar) throws MalformedURLException {
super(new URL[]{
Platform.isWindowsCE()
? new File("/Storage Card/" + (fromJar ? "jna.jar" : "test.jar")).toURI().toURL()
: new File(BUILDDIR + (fromJar ? "/jna.jar" : "/classes")).toURI().toURL()},
new CloverLoader());
if (fromJar) {
assertJarExists();
}
else {
assertLibraryExists();
}
}
@Override
protected Class<?> findClass(String name) throws ClassNotFoundException {
String boot = System.getProperty("jna.boot.library.path");
if (boot != null) {
System.setProperty("jna.boot.library.path", "");
}
Class<?> cls = super.findClass(name);
if (boot != null) {
System.setProperty("jna.boot.library.path", boot);
}
return cls;
}
}
protected void assertJarExists() {
File jar = new File(JNAJAR);
if (!jar.exists()) {
throw new Error("Expected JNA jar file at " + jar + " is missing");
}
}
protected void assertLibraryExists() {
String osPrefix = Platform.getNativeLibraryResourcePrefix();
String name = System.mapLibraryName("jnidispatch").replace(".dylib", ".jnilib");
if(Platform.isAIX()) {
name = name.replaceAll(".so$", ".a");
}
File lib = new File(CLASSES + "/com/sun/jna/" + osPrefix + "/" + name);
if (!lib.exists()) {
throw new Error("Expected JNA library at " + lib + " is missing");
}
}
public void testAvoidJarUnpacking() throws Exception {
System.setProperty("jna.nounpack", "true");
try {
Class<?> cls = Class.forName("com.sun.jna.Native", true, new TestLoader(true));
fail("Class com.sun.jna.Native should not be loadable if jna.nounpack=true: "
+ cls.getClassLoader());
}
catch(UnsatisfiedLinkError e) {
}
finally {
System.setProperty("jna.nounpack", "false");
}
}
public void testAvoidResourcePathLoading() throws Exception {
System.setProperty("jna.noclasspath", "true");
try {
Class<?> cls = Class.forName("com.sun.jna.Native", true, new TestLoader(false));
fail("Class com.sun.jna.Native should not be loadable if jna.noclasspath=true: "
+ cls.getClassLoader());
}
catch(UnsatisfiedLinkError e) {
}
finally {
System.setProperty("jna.noclasspath", "false");
}
}
public void testLoadAndUnloadFromJar() throws Exception {
if (Platform.isIntel() && (! Platform.is64Bit())) {
System.out.println("Skip " + getName() + " - it is known to be flaky and produces false positives on x86-32bit");
return;
}
ClassLoader loader = new TestLoader(true);
Class<?> cls = Class.forName("com.sun.jna.Native", true, loader);
assertEquals("Wrong class loader", loader, cls.getClassLoader());
assertTrue("System property jna.loaded not set", Boolean.getBoolean("jna.loaded"));
Field field = cls.getDeclaredField("jnidispatchPath");
field.setAccessible(true);
String path = (String)field.get(null);
assertNotNull("Native library path unavailable", path);
assertTrue("Native library not unpacked from jar: " + path,
path.startsWith(Native.getTempDir().getAbsolutePath()));
Reference<Class<?>> ref = new WeakReference<Class<?>>(cls);
Reference<ClassLoader> clref = new WeakReference<ClassLoader>(loader);
loader = null;
cls = null;
field = null;
System.gc();
for (int i=0;i < GCWaits.GC_WAITS && (ref.get() != null || clref.get() != null);i++) {
GCWaits.gcRun();
}
assertNull("Class not GC'd: " + ref.get(), ref.get());
assertNull("ClassLoader not GC'd: " + clref.get(), clref.get());
// Check for temporary file deletion
File f = new File(path);
for (int i=0;i < GCWaits.GC_WAITS && (f.exists() || Boolean.getBoolean("jna.loaded"));i++) {
GCWaits.gcRun();
}
if (f.exists()) {
assertTrue("Temporary jnidispatch not marked for later deletion: " + f,
new File(f.getAbsolutePath()+".x").exists());
}
assertFalse("System property jna.loaded not cleared", Boolean.getBoolean("jna.loaded"));
// Should be able to load again without complaints about library
// already loaded in another class loader
try {
loader = new TestLoader(true);
cls = Class.forName("com.sun.jna.Native", true, loader);
} catch(Throwable t) {
fail("Couldn't load class again after discarding first load: " + t.getMessage());
} finally {
loader = null;
cls = null;
System.gc();
}
}
// GC Fails under OpenJDK(linux/ppc)
public void testLoadAndUnloadFromResourcePath() throws Exception {
if (Platform.isIntel() && (! Platform.is64Bit())) {
System.out.println("Skip " + getName() + " - it is known to be flaky and produces false positives on x86-32bit");
return;
}
ClassLoader loader = new TestLoader(false);
Class<?> cls = Class.forName("com.sun.jna.Native", true, loader);
assertEquals("Wrong class loader", loader, cls.getClassLoader());
assertTrue("System property jna.loaded not set", Boolean.getBoolean("jna.loaded"));
Field field = cls.getDeclaredField("jnidispatchPath");
field.setAccessible(true);
String path = (String)field.get(null);
assertNotNull("Native library not found", path);
Reference<Class<?>> ref = new WeakReference<Class<?>>(cls);
Reference<ClassLoader> clref = new WeakReference<ClassLoader>(loader);
loader = null;
cls = null;
field = null;
System.gc();
for (int i=0;i < GCWaits.GC_WAITS && (ref.get() != null || clref.get() != null || Boolean.getBoolean("jna.loaded"));i++) {
GCWaits.gcRun();
}
assertNull("Class not GC'd: " + ref.get(), ref.get());
assertNull("ClassLoader not GC'd: " + clref.get(), clref.get());
assertFalse("System property jna.loaded not cleared", Boolean.getBoolean("jna.loaded"));
Throwable throwable = null;
// NOTE: IBM J9 needs some extra time to unload the native library,
// so try a few times before failing
for (int i=0;i < GCWaits.GC_WAITS;i++) {
GCWaits.gcRun();
try {
loader = new TestLoader(false);
cls = Class.forName("com.sun.jna.Native", true, loader);
break;
}
catch(Throwable t) {
loader = null;
throwable = t;
}
}
try {
if (loader == null) {
fail("Native library not unloaded: " + throwable.getMessage());
}
}
finally {
loader = null;
cls = null;
System.gc();
}
}
public void testLoadFromUnicodePath() throws Exception {
if (Platform.isWindows()) {
String vendor = System.getProperty("java.vendor");
if (vendor != null) {
vendor = vendor.toLowerCase();
if (vendor.contains("oracle") || vendor.contains("sun")) {
System.out.println("Skip " + getName() + " - Fails on Sun JVM windows (32 and 64-bit) (JVM bug), Works with IBM J9 (jdk6) windows");
return;
}
}
}
final String UNICODE = getName() + "-\u0444\u043b\u0441\u0432\u0443";
File tmpdir = new File(System.getProperty("java.io.tmpdir"));
File unicodeDir = new File(tmpdir, UNICODE);
unicodeDir.mkdirs();
Properties props = (Properties)System.getProperties().clone();
try {
System.setProperty("jnidispatch.preserve", "true");
System.setProperty("jna.tmpdir", unicodeDir.getAbsolutePath());
ClassLoader loader = new TestLoader(true);
Class<?> cls = Class.forName("com.sun.jna.Native", true, loader);
assertEquals("Wrong class loader", loader, cls.getClassLoader());
assertTrue("System property jna.loaded not set", Boolean.getBoolean("jna.loaded"));
String path = System.getProperty("jnidispatch.path");
if (path != null) {
File lib = new File(path);
lib.deleteOnExit();
}
}
catch(UnsatisfiedLinkError e) {
throw new Error("JVM error: System.load() failed to load JNA native library from " + System.getProperty("jnidispatch.path") + "): " + e);
}
finally {
System.setProperties(props);
}
}
public static void main(String[] args) {
junit.textui.TestRunner.run(JNALoadTest.class);
}
}