--- /dev/null 2017-11-09 09:38:01.297999907 +0100 +++ new/test/jdk/jdk/jfr/event/runtime/TestModuleEvents.java 2018-04-09 18:30:04.849003380 +0200 @@ -0,0 +1,124 @@ +/* + * Copyright (c) 2016, 2018, 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. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * 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. + */ +package jdk.jfr.event.runtime; + +import static jdk.test.lib.Asserts.assertEquals; + +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +import jdk.jfr.Recording; +import jdk.jfr.consumer.RecordedEvent; +import jdk.jfr.consumer.RecordedObject; +import jdk.test.lib.jfr.EventNames; +import jdk.test.lib.jfr.Events; + +/* + * @test + * @summary Tests the JFR events related to modules + * @key jfr + * @library /test/lib + * @run main/othervm --limit-modules java.base,jdk.jfr jdk.jfr.event.runtime.TestModuleEvents + */ +public final class TestModuleEvents { + + private static final String MODULE_EXPORT_EVENT_NAME = EventNames.ModuleExport; + private static final String MODULE_REQUIRE_EVENT_NAME = EventNames.ModuleRequire; + private static final String UNNAMED = ""; + + public static void main(String[] args) throws Throwable { + verifyRequiredModules(); + verifyExportedModules(); + } + + private static void verifyRequiredModules() throws Throwable { + Recording recording = new Recording(); + recording.enable(MODULE_REQUIRE_EVENT_NAME); + + recording.start(); + recording.stop(); + + List events = Events.fromRecording(recording); + assertDependency(events, "jdk.jfr", "java.base"); // jdk.jfr requires java.base (by edfault) + assertDependency(events, "java.base", "jdk.jfr"); // java.base require jdk.jfr for JDK events, i.e. FileRead + + recording.close(); + } + + private static void assertDependency(List events, String source, String required) throws Exception { + for (RecordedEvent e : events) { + String sourceModule = e.getValue("source.name"); + if (source.equals(sourceModule)) { + RecordedObject module = e.getValue("requiredModule"); + if (module != null) { + if (required.equals(module.getValue("name"))) { + return; + } + } + } + } + throw new Exception("Could not find module dependency between " + source + " and requires modeule "+ required); + } + + private static void verifyExportedModules() throws Throwable { + Recording recording = new Recording(); + recording.enable(MODULE_EXPORT_EVENT_NAME); + recording.start(); + recording.stop(); + + Map edges = new HashMap<>(); + + List events = Events.fromRecording(recording); + events.stream().forEach((ev) -> { + String exportedPackage = getValue(ev.getValue("exportedPackage"), "name", UNNAMED); + String toModule = getValue(ev.getValue("targetModule"), "name", UNNAMED); + + edges.put(exportedPackage, toModule); + }); + + // We expect + // 1) jdk.jfr -> (because we use the package) + // 2) java.util -> (because we use the package) + // 3) jdk.jfr.events -> java.base (from the jfr design) + // 4) jdk.internal -> jdk.jfr (from the jfr design) + // Where 'a -> b' means "package 'a' exported to module 'b'" + assertEquals(edges.get("jdk/jfr"), UNNAMED); + assertEquals(edges.get("java/util"), UNNAMED); + assertEquals(edges.get("jdk/jfr/events"), "java.base"); + assertEquals(edges.get("jdk/internal"), "jdk.jfr"); + + recording.close(); + } + + // Helper function to get field from a RecordedObject + private static String getValue(RecordedObject ro, String field, String defVal) { + if (ro != null && ro.getValue(field) != null) { + return ro.getValue(field); + } else { + return defVal; + } + } +}