| /* |
| * Copyright (c) 2013, 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.compiler; |
| |
| import java.io.File; |
| import java.lang.reflect.Method; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.nio.file.Paths; |
| import java.util.List; |
| |
| import sun.hotspot.WhiteBox; |
| import jdk.jfr.Recording; |
| import jdk.jfr.consumer.RecordedEvent; |
| import jdk.test.lib.classloader.FilterClassLoader; |
| import jdk.test.lib.classloader.ParentLastURLClassLoader; |
| import jdk.test.lib.jfr.EventNames; |
| import jdk.test.lib.jfr.Events; |
| import jdk.test.lib.Utils; |
| |
| /* |
| * @test TestCodeSweeperStats |
| * @key jfr |
| * @library /test/lib |
| * @requires vm.compMode!="Xint" |
| * @build sun.hotspot.WhiteBox |
| * @run main ClassFileInstaller sun.hotspot.WhiteBox |
| * sun.hotspot.WhiteBox$WhiteBoxPermission |
| * @run main/othervm -Xbootclasspath/a:. |
| * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI |
| * -XX:CompileOnly=jdk.jfr.event.compiler.TestCodeSweeperStats::dummyMethod |
| * -XX:+SegmentedCodeCache jdk.jfr.event.compiler.TestCodeSweeperStats |
| * @run main/othervm -Xbootclasspath/a:. |
| * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI |
| * -XX:CompileOnly=jdk.jfr.event.compiler.TestCodeSweeperStats::dummyMethod |
| * -XX:-SegmentedCodeCache jdk.jfr.event.compiler.TestCodeSweeperStats |
| */ |
| public class TestCodeSweeperStats { |
| private static final String EVENT_NAME = EventNames.CodeSweeperStatistics; |
| private static final int WAIT_TIME = 10_000; |
| private static final String CLASS_METHOD_TO_COMPILE = "dummyMethod"; |
| private static final int METHODS_TO_COMPILE = Integer.getInteger("compile.methods.count", 10); |
| private static final int COMP_LEVEL_SIMPLE = 1; |
| private static final int COMP_LEVEL_FULL_OPTIMIZATION = 4; |
| |
| public static void main(String[] args) throws Exception { |
| Recording recording = new Recording(); |
| recording.enable(EVENT_NAME).with("period", "endChunk"); |
| recording.start(); |
| compileAndSweep(); |
| recording.stop(); |
| |
| List<RecordedEvent> events = Events.fromRecording(recording); |
| Events.hasEvents(events); |
| for (RecordedEvent event : events) { |
| Events.assertField(event, "sweepCount").atLeast(1); |
| Events.assertField(event, "methodReclaimedCount").equal(METHODS_TO_COMPILE); |
| Events.assertField(event, "totalSweepTime").atLeast(0L); |
| Events.assertField(event, "peakFractionTime").atLeast(0L); |
| Events.assertField(event, "peakSweepTime").atLeast(0L); |
| } |
| } |
| |
| private static void compileAndSweep() throws InterruptedException { |
| WhiteBox WB = WhiteBox.getWhiteBox(); |
| for (int i = 0; i < METHODS_TO_COMPILE; i++) { |
| System.out.println("compile " + i); |
| compileMethod(); |
| } |
| |
| WB.deoptimizeAll(); |
| System.out.println("All methods deoptimized"); |
| |
| // method will be sweeped out of code cache after 5 sweep cycles |
| for (int i = 0; i < 5; i++) { |
| WB.fullGC(); |
| WB.forceNMethodSweep(); |
| |
| } |
| // now wait for event(s) to be fired |
| Thread.sleep(WAIT_TIME); |
| } |
| |
| public void dummyMethod() { |
| System.out.println("Hello World!"); |
| } |
| |
| protected static void compileMethod() { |
| ClassLoader current = TestCodeSweeperStats.class.getClassLoader(); |
| String[] cpaths = System.getProperty("test.classes", ".").split(File.pathSeparator); |
| URL[] urls = new URL[cpaths.length]; |
| try { |
| for (int i = 0; i < cpaths.length; i++) { |
| urls[i] = Paths.get(cpaths[i]).toUri().toURL(); |
| } |
| } catch (MalformedURLException e) { |
| throw new Error(e); |
| } |
| |
| String currentClassName = TestCodeSweeperStats.class.getName(); |
| FilterClassLoader cl = new FilterClassLoader(new ParentLastURLClassLoader(urls, current), ClassLoader.getSystemClassLoader(), (name) -> currentClassName.equals(name)); |
| Class<?> loadedClass = null; |
| String className = currentClassName; |
| try { |
| loadedClass = cl.loadClass(className); |
| } catch (ClassNotFoundException ex) { |
| throw new Error("Couldn't load class " + className, ex); |
| } |
| try { |
| Method mtd = loadedClass.getMethod(CLASS_METHOD_TO_COMPILE); |
| WhiteBox WB = WhiteBox.getWhiteBox(); |
| WB.testSetDontInlineMethod(mtd, true); |
| String directive = "[{ match: \"" + TestCodeSweeperStats.class.getName().replace('.', '/') |
| + "." + CLASS_METHOD_TO_COMPILE + "\", " + "BackgroundCompilation: false }]"; |
| WB.addCompilerDirective(directive); |
| if (!WB.enqueueMethodForCompilation(mtd, COMP_LEVEL_FULL_OPTIMIZATION)) { |
| WB.enqueueMethodForCompilation(mtd, COMP_LEVEL_SIMPLE); |
| } |
| Utils.waitForCondition(() -> WB.isMethodCompiled(mtd)); |
| } catch (NoSuchMethodException e) { |
| throw new Error("An exception while trying compile method " + e.getMessage(), e); |
| } |
| } |
| } |