1 /* 2 * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package jdk.jfr.event.runtime; 26 27 import static jdk.test.lib.Asserts.assertEquals; 28 29 import java.util.HashMap; 30 import java.util.List; 31 import java.util.Map; 32 33 import jdk.jfr.Recording; 34 import jdk.jfr.consumer.RecordedEvent; 35 import jdk.jfr.consumer.RecordedObject; 36 import jdk.test.lib.jfr.EventNames; 37 import jdk.test.lib.jfr.Events; 38 39 /* 40 * @test 41 * @summary Tests the JFR events related to modules 42 * @key jfr 43 * @requires !vm.graal.enabled 44 * @library /test/lib 45 * @run main/othervm --limit-modules java.base,jdk.jfr jdk.jfr.event.runtime.TestModuleEvents 46 */ 47 public final class TestModuleEvents { 48 49 private static final String MODULE_EXPORT_EVENT_NAME = EventNames.ModuleExport; 50 private static final String MODULE_REQUIRE_EVENT_NAME = EventNames.ModuleRequire; 51 private static final String UNNAMED = "<unnamed>"; 52 53 public static void main(String[] args) throws Throwable { 54 verifyRequiredModules(); 55 verifyExportedModules(); 56 } 57 58 private static void verifyRequiredModules() throws Throwable { 59 Recording recording = new Recording(); 60 recording.enable(MODULE_REQUIRE_EVENT_NAME); 61 62 recording.start(); 63 recording.stop(); 64 65 List<RecordedEvent> events = Events.fromRecording(recording); 66 assertDependency(events, "jdk.jfr", "java.base"); // jdk.jfr requires java.base (by edfault) 67 assertDependency(events, "java.base", "jdk.jfr"); // java.base require jdk.jfr for JDK events, i.e. FileRead 68 69 recording.close(); 70 } 71 72 private static void assertDependency(List<RecordedEvent> events, String source, String required) throws Exception { 73 for (RecordedEvent e : events) { 74 String sourceModule = e.getValue("source.name"); 75 if (source.equals(sourceModule)) { 76 RecordedObject module = e.getValue("requiredModule"); 77 if (module != null) { 78 if (required.equals(module.getValue("name"))) { 79 return; 80 } 81 } 82 } 83 } 84 throw new Exception("Could not find module dependency between " + source + " and requires modeule "+ required); 85 } 86 87 private static void verifyExportedModules() throws Throwable { 88 Recording recording = new Recording(); 89 recording.enable(MODULE_EXPORT_EVENT_NAME); 90 recording.start(); 91 recording.stop(); 92 93 Map<String, String> edges = new HashMap<>(); 94 95 List<RecordedEvent> events = Events.fromRecording(recording); 96 events.stream().forEach((ev) -> { 97 String exportedPackage = getValue(ev.getValue("exportedPackage"), "name", UNNAMED); 98 String toModule = getValue(ev.getValue("targetModule"), "name", UNNAMED); 99 100 edges.put(exportedPackage, toModule); 101 }); 102 103 // We expect 104 // 1) jdk.jfr -> <unnamed> (because we use the package) 105 // 2) java.util -> <unnamed> (because we use the package) 106 // 3) jdk.jfr.events -> java.base (from the jfr design) 107 // 4) jdk.internal -> jdk.jfr (from the jfr design) 108 // Where 'a -> b' means "package 'a' exported to module 'b'" 109 assertEquals(edges.get("jdk/jfr"), UNNAMED); 110 assertEquals(edges.get("java/util"), UNNAMED); 111 assertEquals(edges.get("jdk/jfr/events"), "java.base"); 112 assertEquals(edges.get("jdk/internal"), "jdk.jfr"); 113 114 recording.close(); 115 } 116 117 // Helper function to get field from a RecordedObject 118 private static String getValue(RecordedObject ro, String field, String defVal) { 119 if (ro != null && ro.getValue(field) != null) { 120 return ro.getValue(field); 121 } else { 122 return defVal; 123 } 124 } 125 }