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8239568: [TESTBUG] LoadLibraryTest.java fails with RuntimeException
Throw jtreg.SkippedException instead of failing if shared library isn't unloaded

Reviewed-by: coleenp, lmesnik
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Harold Seigel committed Mar 2, 2020
1 parent 84f3e86 commit 6bb0536293e61866d1af1e14f782717cb2607aa1

This file was deleted.

@@ -26,24 +26,114 @@
* @bug 8187305
* @summary Tests logging of shared library loads and unloads.
* @library /runtime/testlibrary /test/lib
* @compile LoadLibrary.java
* @build sun.hotspot.WhiteBox
* @run main ClassFileInstaller sun.hotspot.WhiteBox
* sun.hotspot.WhiteBox$WhiteBoxPermission
* @run main LoadLibraryTest
*/

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;

import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
import jtreg.SkippedException;

import sun.hotspot.WhiteBox;

public class LoadLibraryTest {

public static final String CLASS_NAME = "LoadLibraryTest$LoadLibraryClass";

private static class LoadLibrary {

static String testClasses;

public static void runTest() throws Exception {
// create a classloader and load a class that loads a library.
MyClassLoader myLoader = new MyClassLoader();
Class<?> c = Class.forName(CLASS_NAME, true, myLoader);
}

public static void main(String[] args) throws Exception {
testClasses = args[0];
runTest();
ClassUnloadCommon.triggerUnloading();
WhiteBox wb = WhiteBox.getWhiteBox();
if (!wb.isClassAlive(CLASS_NAME)) {
System.out.println("Class LoadLibraryClass was unloaded");
}
}


public static class MyClassLoader extends ClassLoader {

static ByteBuffer readClassFile(String name) {
File f = new File(testClasses, name);
try (FileInputStream fin = new FileInputStream(f);
FileChannel fc = fin.getChannel())
{
return fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());
} catch (IOException e) {
throw new RuntimeException("Can't open file: " + name +
", exception: " + e.toString());
}
}

protected Class<?> loadClass(String name, boolean resolve)
throws ClassNotFoundException {
Class<?> c;
if (!CLASS_NAME.equals(name)) {
c = super.loadClass(name, resolve);
} else {
// should not delegate to the system class loader
c = findClass(name);
if (resolve) {
resolveClass(c);
}
}
return c;
}

protected Class<?> findClass(String name) throws ClassNotFoundException {
if (!CLASS_NAME.equals(name)) {
throw new ClassNotFoundException("Unexpected class: " + name);
}
return defineClass(name, readClassFile(name + ".class"), null);
}
} // MyClassLoader
}


static class LoadLibraryClass {
static {
System.loadLibrary("LoadLibraryClass");
nTest();
}
native static void nTest();
}


public static void main(String... args) throws Exception {
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
"-Xlog:library=info", "-Djava.library.path=" + System.getProperty("java.library.path"),
"LoadLibrary", System.getProperty("test.classes"));
"-Xbootclasspath/a:.", "-XX:+UnlockDiagnosticVMOptions",
"-XX:+WhiteBoxAPI", "-Xmn8m", "-Xlog:library=info",
"-Djava.library.path=" + System.getProperty("java.library.path"),
"-XX:+UnlockDiagnosticVMOptions", "-XX:+WhiteBoxAPI",
"LoadLibraryTest$LoadLibrary", System.getProperty("test.classes"));

OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldContain("Loaded library");
output.shouldContain("Found Java_LoadLibraryClass_nTest in library");
output.shouldContain("Unloaded library with handle");
output.shouldHaveExitValue(0);
output.shouldContain("Loaded library");
output.shouldContain("Found Java_LoadLibraryTest_00024LoadLibraryClass_nTest__ in library");
if (output.getOutput().contains("Class LoadLibraryClass was unloaded")) {
output.shouldContain("Unloaded library with handle");
} else {
throw new SkippedException(
"Skipping check for library unloading logging because no unloading occurred");
}
}
}
@@ -27,4 +27,4 @@

#include "jni.h"

JNIEXPORT void JNICALL Java_LoadLibraryClass_nTest(JNIEnv* env, jclass jclazz) { }
JNIEXPORT void JNICALL Java_LoadLibraryTest_00024LoadLibraryClass_nTest__(JNIEnv* env, jclass jclazz) { }

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