1 /* 2 * Copyright (c) 2013, 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 26 package jdk.jfr.event.compiler; 27 28 import java.io.File; 29 import java.lang.reflect.Method; 30 import java.net.MalformedURLException; 31 import java.net.URL; 32 import java.nio.file.Paths; 33 import java.util.List; 34 35 import sun.hotspot.WhiteBox; 36 import jdk.jfr.Recording; 37 import jdk.jfr.consumer.RecordedEvent; 38 import jdk.test.lib.classloader.FilterClassLoader; 39 import jdk.test.lib.classloader.ParentLastURLClassLoader; 40 import jdk.test.lib.jfr.EventNames; 41 import jdk.test.lib.jfr.Events; 42 import jdk.test.lib.Utils; 43 44 /* 45 * @test TestCodeSweeperStats 46 * @key jfr 47 * @library /test/lib 48 * @requires vm.compMode!="Xint" 49 * @build sun.hotspot.WhiteBox 50 * @run main ClassFileInstaller sun.hotspot.WhiteBox 51 * sun.hotspot.WhiteBox$WhiteBoxPermission 52 * @run main/othervm -Xbootclasspath/a:. 53 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI 54 * -XX:CompileOnly=jdk.jfr.event.compiler.TestCodeSweeperStats::dummyMethod 55 * -XX:+SegmentedCodeCache jdk.jfr.event.compiler.TestCodeSweeperStats 56 * @run main/othervm -Xbootclasspath/a:. 57 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI 58 * -XX:CompileOnly=jdk.jfr.event.compiler.TestCodeSweeperStats::dummyMethod 59 * -XX:-SegmentedCodeCache jdk.jfr.event.compiler.TestCodeSweeperStats 60 */ 61 public class TestCodeSweeperStats { 62 private static final String EVENT_NAME = EventNames.CodeSweeperStatistics; 63 private static final int WAIT_TIME = 10_000; 64 private static final String CLASS_METHOD_TO_COMPILE = "dummyMethod"; 65 private static final int METHODS_TO_COMPILE = Integer.getInteger("compile.methods.count", 10); 66 private static final int COMP_LEVEL_SIMPLE = 1; 67 private static final int COMP_LEVEL_FULL_OPTIMIZATION = 4; 68 69 public static void main(String[] args) throws Exception { 70 Recording recording = new Recording(); 71 recording.enable(EVENT_NAME).with("period", "endChunk"); 72 recording.start(); 73 compileAndSweep(); 74 recording.stop(); 75 76 List<RecordedEvent> events = Events.fromRecording(recording); 77 Events.hasEvents(events); 78 for (RecordedEvent event : events) { 79 Events.assertField(event, "sweepCount").atLeast(1); 80 Events.assertField(event, "methodReclaimedCount").equal(METHODS_TO_COMPILE); 81 Events.assertField(event, "totalSweepTime").atLeast(0L); 82 Events.assertField(event, "peakFractionTime").atLeast(0L); 83 Events.assertField(event, "peakSweepTime").atLeast(0L); 84 } 85 } 86 87 private static void compileAndSweep() throws InterruptedException { 88 WhiteBox WB = WhiteBox.getWhiteBox(); 89 for (int i = 0; i < METHODS_TO_COMPILE; i++) { 90 System.out.println("compile " + i); 91 compileMethod(); 92 } 93 94 WB.deoptimizeAll(); 95 System.out.println("All methods deoptimized"); 96 97 // method will be sweeped out of code cache after 5 sweep cycles 98 for (int i = 0; i < 5; i++) { 99 WB.fullGC(); 100 WB.forceNMethodSweep(); 101 102 } 103 // now wait for event(s) to be fired 104 Thread.sleep(WAIT_TIME); 105 } 106 107 public void dummyMethod() { 108 System.out.println("Hello World!"); 109 } 110 111 protected static void compileMethod() { 112 ClassLoader current = TestCodeSweeperStats.class.getClassLoader(); 113 String[] cpaths = System.getProperty("test.classes", ".").split(File.pathSeparator); 114 URL[] urls = new URL[cpaths.length]; 115 try { 116 for (int i = 0; i < cpaths.length; i++) { 117 urls[i] = Paths.get(cpaths[i]).toUri().toURL(); 118 } 119 } catch (MalformedURLException e) { 120 throw new Error(e); 121 } 122 123 String currentClassName = TestCodeSweeperStats.class.getName(); 124 FilterClassLoader cl = new FilterClassLoader(new ParentLastURLClassLoader(urls, current), ClassLoader.getSystemClassLoader(), (name) -> currentClassName.equals(name)); 125 Class<?> loadedClass = null; 126 String className = currentClassName; 127 try { 128 loadedClass = cl.loadClass(className); 129 } catch (ClassNotFoundException ex) { 130 throw new Error("Couldn't load class " + className, ex); 131 } 132 try { 133 Method mtd = loadedClass.getMethod(CLASS_METHOD_TO_COMPILE); 134 WhiteBox WB = WhiteBox.getWhiteBox(); 135 WB.testSetDontInlineMethod(mtd, true); 136 String directive = "[{ match: \"" + TestCodeSweeperStats.class.getName().replace('.', '/') 137 + "." + CLASS_METHOD_TO_COMPILE + "\", " + "BackgroundCompilation: false }]"; 138 WB.addCompilerDirective(directive); 139 if (!WB.enqueueMethodForCompilation(mtd, COMP_LEVEL_FULL_OPTIMIZATION)) { 140 WB.enqueueMethodForCompilation(mtd, COMP_LEVEL_SIMPLE); 141 } 142 Utils.waitForCondition(() -> WB.isMethodCompiled(mtd)); 143 } catch (NoSuchMethodException e) { 144 throw new Error("An exception while trying compile method " + e.getMessage(), e); 145 } 146 } 147 }