jdk-sandbox: test/hotspot/jtreg/runtime/LoaderConstraints/vtableLdrConstraint/Test.java@e0dbf14885b8 (annotated)

47554 bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	1	/*
50036 e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	2	* Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
47554 bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	4	*
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	5	* This code is free software; you can redistribute it and/or modify it
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	6	* under the terms of the GNU General Public License version 2 only, as
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	7	* published by the Free Software Foundation.
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	8	*
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	9	* This code is distributed in the hope that it will be useful, but WITHOUT
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	12	* version 2 for more details (a copy is included in the LICENSE file that
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	13	* accompanied this code).
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	14	*
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	15	* You should have received a copy of the GNU General Public License version
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	16	* 2 along with this work; if not, write to the Free Software Foundation,
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	18	*
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	20	* or visit www.oracle.com if you need additional information or have any
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	21	* questions.
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	22	*/
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	23
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	24	/*
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	25	* @test
50036 e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	26	* @bug 8186092 8199852
47554 bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	27	* @compile ../common/Foo.java
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	28	* ../common/J.java
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	29	* I.java
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	30	* ../common/C.jasm
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	31	* Task.java
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	32	* ../common/PreemptingClassLoader.java
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	33	* @run main/othervm Test
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	34	*/
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	35
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	36	public class Test {
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	37
50036 e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	38	static String expectedErrorMessage1 =
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	39	"loader constraint violation for class test.Task: " +
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	40	"when selecting overriding method test.Task.m()Ltest/Foo; " +
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	41	"the class loader \"<unnamed>\" (instance of PreemptingClassLoader, " +
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	42	"child of \"app\" jdk.internal.loader.ClassLoaders$AppClassLoader) " +
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	43	"of the selected method's type test.Task, " +
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	44	"and the class loader \"app\" (instance of jdk.internal.loader.ClassLoaders$AppClassLoader) " +
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	45	"for its super type test.J " +
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	46	"have different Class objects for the type test.Foo used in the signature";
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	47
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	48	static String expectedErrorMessage2 =
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	49	"loader constraint violation for class test.Task: " +
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	50	"when selecting overriding method test.Task.m()Ltest/Foo; " +
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	51	"the class loader \"VtableLdrCnstrnt_Test_Loader\" (instance of PreemptingClassLoader, " +
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	52	"child of \"app\" jdk.internal.loader.ClassLoaders$AppClassLoader) " +
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	53	"of the selected method's type test.Task, " +
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	54	"and the class loader \"app\" (instance of jdk.internal.loader.ClassLoaders$AppClassLoader) " +
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	55	"for its super type test.J " +
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	56	"have different Class objects for the type test.Foo used in the signature";
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	57
47554 bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	58	// Test that the error message is correct when a loader constraint error is
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	59	// detected during vtable creation.
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	60	//
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	61	// In this test, during vtable creation for class Task, method "Task.m()LFoo;"
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	62	// overrides "J.m()LFoo;". But, Task's class Foo and super type J's class Foo
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	63	// are different. So, a LinkageError exception should be thrown because the
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	64	// loader constraint check will fail.
50036 e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	65	public static void test(String loaderName, String expectedErrorMessage) throws Exception {
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	66	Class<?> c = test.Foo.class; // Forces standard class loader to load Foo.
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	67	String[] classNames = {"test.Task", "test.Foo", "test.I"};
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	68	ClassLoader l = new PreemptingClassLoader(loaderName, classNames);
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	69	l.loadClass("test.Foo");
47554 bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	70	try {
50036 e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	71	l.loadClass("test.Task").newInstance();
47554 bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	72	throw new RuntimeException("Expected LinkageError exception not thrown");
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	73	} catch (LinkageError e) {
50036 e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	74	String errorMsg = e.getMessage();
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	75	if (!errorMsg.equals(expectedErrorMessage)) {
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	76	System.out.println("Expected: " + expectedErrorMessage + "\n" +
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	77	"but got: " + errorMsg);
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	78	throw new RuntimeException("Wrong LinkageError exception thrown: " + errorMsg);
47554 bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	79	}
50036 e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	80	System.out.println("Passed with message: " + errorMsg);
47554 bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	81	}
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	82	}
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	83
50036 e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	84	public static void main(String args[]) throws Exception {
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	85	test(null, expectedErrorMessage1);
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	86	test("VtableLdrCnstrnt_Test_Loader", expectedErrorMessage2);
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors. goetz parents: 47554 diff changeset	87	}
47554 bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	88	}
bc112140e089 8186092: Unnecessary loader constraints produced when there are multiple defaults hseigel parents: diff changeset	89

author	goetz
	Mon, 07 May 2018 11:38:21 +0200
changeset 50036	e0dbf14885b8
parent 47554	bc112140e089
child 50634	c349d409262a
permissions	-rw-r--r--