87 lines
3.6 KiB
Java
87 lines
3.6 KiB
Java
/*
|
|
* Copyright (c) 2018, 2024, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*/
|
|
|
|
/*
|
|
* @test ConstantPoolDependsTest
|
|
* @bug 8210094
|
|
* @summary Create ClassLoader dependency from initiating loader to class loader through constant pool reference
|
|
* @requires vm.opt.final.ClassUnloading
|
|
* @modules java.base/jdk.internal.misc
|
|
* java.compiler
|
|
* @library /test/lib
|
|
* @build jdk.test.whitebox.WhiteBox
|
|
* @compile p2/c2.java MyDiffClassLoader.java
|
|
* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
|
|
* @run main/othervm -Xbootclasspath/a:. -Xmn8m -XX:+UnlockDiagnosticVMOptions -Xlog:class+unload -XX:+WhiteBoxAPI ConstantPoolDependsTest
|
|
*/
|
|
|
|
import jdk.test.whitebox.WhiteBox;
|
|
import jdk.test.lib.classloader.ClassUnloadCommon;
|
|
|
|
import java.lang.ref.Reference;
|
|
import java.util.List;
|
|
import java.util.Set;
|
|
public class ConstantPoolDependsTest {
|
|
public static WhiteBox wb = WhiteBox.getWhiteBox();
|
|
public static final String MY_TEST = "ConstantPoolDependsTest$c1c";
|
|
|
|
public static class c1c {
|
|
private void test() throws Exception {
|
|
// ConstantPool.klass_at_impl loads through constant pool and creates dependency
|
|
p2.c2 c2_obj = new p2.c2();
|
|
c2_obj.method2();
|
|
}
|
|
|
|
public c1c () throws Exception {
|
|
test();
|
|
ClassUnloadCommon.triggerUnloading(); // should not unload anything
|
|
test();
|
|
ClassUnloadCommon.triggerUnloading(); // should not unload anything
|
|
}
|
|
}
|
|
|
|
static void test() throws Throwable {
|
|
|
|
// now use the same loader to load class MyTest
|
|
Class MyTest_class = new MyDiffClassLoader(MY_TEST).loadClass(MY_TEST);
|
|
|
|
try {
|
|
// Call MyTest to load p2.c2 twice and call p2.c2.method2
|
|
MyTest_class.newInstance();
|
|
} catch (Exception e) {
|
|
throw new RuntimeException("Test FAILED if NoSuchMethodException is thrown");
|
|
}
|
|
ClassUnloadCommon.triggerUnloading(); // should not unload anything
|
|
ClassUnloadCommon.failIf(!wb.isClassAlive(MY_TEST), "should not be unloaded");
|
|
ClassUnloadCommon.failIf(!wb.isClassAlive("p2.c2"), "should not be unloaded");
|
|
// Should not unload anything before here because MyTest_class is kept alive by the following fence.
|
|
Reference.reachabilityFence(MyTest_class);
|
|
}
|
|
|
|
public static void main(String args[]) throws Throwable {
|
|
test();
|
|
Set<String> aliveClasses = ClassUnloadCommon.triggerUnloading(List.of(MY_TEST, "p2.c2"));
|
|
ClassUnloadCommon.failIf(!aliveClasses.isEmpty(), "should be unloaded: " + aliveClasses);
|
|
}
|
|
}
|