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 * 44 * 45 * @library /lib / 46 * @run main/othervm --limit-modules java.base,jdk.jfr jdk.jfr.event.runtime.TestModuleEvents 47 */ 48 public final class TestModuleEvents { 49 50 private static final String MODULE_EXPORT_EVENT_NAME = EventNames.ModuleExport; 51 private static final String MODULE_REQUIRE_EVENT_NAME = EventNames.ModuleRequire; 52 private static final String UNNAMED = "<unnamed>"; 53 54 public static void main(String[] args) throws Throwable { 55 verifyRequiredModules(); 56 verifyExportedModules(); 57 } 58 59 private static void verifyRequiredModules() throws Throwable { 60 Recording recording = new Recording(); 61 recording.enable(MODULE_REQUIRE_EVENT_NAME); 62 63 recording.start(); 64 recording.stop(); 65 66 List<RecordedEvent> events = Events.fromRecording(recording); 67 assertDependency(events, "jdk.jfr", "java.base"); // jdk.jfr requires java.base (by edfault) 68 assertDependency(events, "java.base", "jdk.jfr"); // java.base require jdk.jfr for JDK events, i.e. FileRead 69 70 recording.close(); 71 } 72 73 private static void assertDependency(List<RecordedEvent> events, String source, String required) throws Exception { 74 for (RecordedEvent e : events) { 75 String sourceModule = e.getValue("source.name"); 76 if (source.equals(sourceModule)) { 77 RecordedObject module = e.getValue("requiredModule"); 78 if (module != null) { 79 if (required.equals(module.getValue("name"))) { 80 return; 81 } 82 } 83 } 84 } 85 throw new Exception("Could not find module dependency between " + source + " and requires modeule "+ required); 86 } 87 88 private static void verifyExportedModules() throws Throwable { 89 Recording recording = new Recording(); 90 recording.enable(MODULE_EXPORT_EVENT_NAME); 91 recording.start(); 92 recording.stop(); 93 94 Map<String, String> edges = new HashMap<>(); 95 96 List<RecordedEvent> events = Events.fromRecording(recording); 97 events.stream().forEach((ev) -> { 98 String exportedPackage = getValue(ev.getValue("exportedPackage"), "name", UNNAMED); 99 String toModule = getValue(ev.getValue("targetModule"), "name", UNNAMED); 100 101 edges.put(exportedPackage, toModule); 102 }); 103 104 // We expect 105 // 1) jdk.jfr -> <unnamed> (because we use the package) 106 // 2) java.util -> <unnamed> (because we use the package) 107 // 3) jdk.jfr.events -> java.base (from the jfr design) 108 // 4) jdk.internal -> jdk.jfr (from the jfr design) 109 // Where 'a -> b' means "package 'a' exported to module 'b'" 110 assertEquals(edges.get("jdk/jfr"), UNNAMED); 111 assertEquals(edges.get("java/util"), UNNAMED); 112 assertEquals(edges.get("jdk/jfr/events"), "java.base"); 113 assertEquals(edges.get("jdk/internal"), "jdk.jfr"); 114 115 recording.close(); 116 } 117 118 // Helper function to get field from a RecordedObject 119 private static String getValue(RecordedObject ro, String field, String defVal) { 120 if (ro != null && ro.getValue(field) != null) { 121 return ro.getValue(field); 122 } else { 123 return defVal; 124 } 125 } 126 }