cfee4512f7
Reviewed-by: vromero, jlahoda
168 lines
6.9 KiB
Java
168 lines
6.9 KiB
Java
/*
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Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8174954
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* @summary Test that invokedynamic instructions, that initially throw IAE exceptions
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* because of a missing module read edge, behave correctly when executed
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* after the module read edge is added.
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* @compile ModuleLibrary.java
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* p2/c2.java
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* p5/c5.jasm
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* p7/c7.jasm
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* @run main/othervm MethodAccessReadTwice
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*/
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import java.lang.module.Configuration;
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import java.lang.module.ModuleDescriptor;
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import java.lang.module.ModuleFinder;
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import java.lang.ModuleLayer;
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import java.lang.Module;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Set;
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// defines first_mod --> packages p5
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// defines second_mod --> package p2, p2 is exported to first_mod
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// defines third_mod --> packages p7
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public class MethodAccessReadTwice {
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// Create a Layer over the boot layer.
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// Define modules within this layer to test access between
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// publicly defined classes within packages of those modules.
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public void createLayerOnBoot() throws Throwable {
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// Define module: first_mod
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// Can read: java.base
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// Packages: p5
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// Packages exported: p5 is exported unqualifiedly
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ModuleDescriptor descriptor_first_mod =
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ModuleDescriptor.newModule("first_mod")
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.requires("java.base")
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.exports("p5")
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.build();
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// Define module: second_mod
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// Can read: java.base
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// Packages: p2
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// Packages exported: p2 is exported to first_mod
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ModuleDescriptor descriptor_second_mod =
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ModuleDescriptor.newModule("second_mod")
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.requires("java.base")
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.exports("p2")
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.build();
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// Define module: third_mod
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// Can read: java.base
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// Packages: p7
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// Packages exported: p7 is exported unqualifiedly
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ModuleDescriptor descriptor_third_mod =
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ModuleDescriptor.newModule("third_mod")
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.requires("java.base")
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.exports("p7")
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.build();
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// Set up a ModuleFinder containing all modules for this layer
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ModuleFinder finder = ModuleLibrary.of(descriptor_first_mod,
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descriptor_second_mod,
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descriptor_third_mod);
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// Resolves "first_mod", "second_mod", and "third_mod"
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Configuration cf = ModuleLayer.boot()
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.configuration()
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.resolve(finder, ModuleFinder.of(),
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Set.of("first_mod", "second_mod", "third_mod"));
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// Map each module to this class loader
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Map<String, ClassLoader> map = new HashMap<>();
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ClassLoader loader = MethodAccessReadTwice.class.getClassLoader();
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map.put("first_mod", loader);
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map.put("second_mod", loader);
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map.put("third_mod", loader);
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// Create Layer that contains first_mod, second_mod, and third_mod
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ModuleLayer layer = ModuleLayer.boot().defineModules(cf, map::get);
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Class p2_c2_class = loader.loadClass("p2.c2");
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Class p5_c5_class = loader.loadClass("p5.c5");
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Class p7_c7_class = loader.loadClass("p7.c7");
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Module first_mod = p5_c5_class.getModule();
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Module second_mod = p2_c2_class.getModule();
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Module third_mod = p7_c7_class.getModule();
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p5.c5 c5_obj = new p5.c5();
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p2.c2 c2_obj = new p2.c2();
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p7.c7 c7_obj = new p7.c7();
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// Test that if an invokedynamic instruction gets an IAE exception because
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// of a module read issue, and then the read issue is fixed, that
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// re-executing the same invokedynamic instruction will get the same IAE.
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// First access check for p5.c5 --> call to method5 --> tries to access p2.c2
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try {
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// Should throw IAE because p5.c5's module cannot read p2.c2's module.
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c5_obj.method5(c2_obj);
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throw new RuntimeException("Test Failed, module first_mod should not have access to p2.c2");
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} catch (IllegalAccessError e) {
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String message = e.getMessage();
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if (!(message.contains("cannot access") &&
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message.contains("because module first_mod does not read module second_mod"))) {
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throw new RuntimeException("Wrong message: " + message);
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} else {
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System.out.println("Test Succeeded at attempt #1");
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}
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}
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// Add a read edge from p5/c5's module (first_mod) to p2.c2's module (second_mod)
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c5_obj.methodAddReadEdge(p2_c2_class.getModule());
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// Second access check for p5.c5, should have same result as first
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try {
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c5_obj.method5(c2_obj); // should result in IAE
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throw new RuntimeException("Test Failed, access should have been cached above");
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} catch (IllegalAccessError e) {
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String message = e.getMessage();
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if (!(message.contains("cannot access") &&
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message.contains("because module first_mod does not read module second_mod"))) {
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throw new RuntimeException("Wrong message: " + message);
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} else {
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System.out.println("Test Succeeded at attempt #2");
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}
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}
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// Test that if one invokedynamic instruction gets an IAE exception
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// because of a module read issue, and then the read issue is fixed, that
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// a subsequent invokedynamic instruction, that tries the same access,
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// succeeds.
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c7_obj.method7(c2_obj, second_mod); // Should not result in IAE
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}
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public static void main(String args[]) throws Throwable {
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MethodAccessReadTwice test = new MethodAccessReadTwice();
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test.createLayerOnBoot();
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}
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}
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