| /* |
| * Copyright (c) 2013, 2015, 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. |
| * |
| * 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 org.graalvm.compiler.debug.test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.lang.management.ThreadMXBean; |
| |
| import org.junit.Assert; |
| import org.junit.Assume; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import org.graalvm.compiler.debug.Debug; |
| import org.graalvm.compiler.debug.DebugCloseable; |
| import org.graalvm.compiler.debug.DebugConfig; |
| import org.graalvm.compiler.debug.DebugConfigScope; |
| import org.graalvm.compiler.debug.DebugTimer; |
| import org.graalvm.compiler.debug.Management; |
| |
| @SuppressWarnings("try") |
| public class DebugTimerTest { |
| |
| private static final ThreadMXBean threadMXBean = Management.getThreadMXBean(); |
| |
| @Before |
| public void checkCapabilities() { |
| Assume.assumeTrue("skipping management interface test", threadMXBean.isCurrentThreadCpuTimeSupported()); |
| } |
| |
| /** |
| * Actively spins the current thread for at least a given number of milliseconds in such a way |
| * that timers for the current thread keep ticking over. |
| * |
| * @return the number of milliseconds actually spent spinning which is guaranteed to be >= |
| * {@code ms} |
| */ |
| private static long spin(long ms) { |
| long start = threadMXBean.getCurrentThreadCpuTime(); |
| do { |
| long durationMS = (threadMXBean.getCurrentThreadCpuTime() - start) / 1000; |
| if (durationMS >= ms) { |
| return durationMS; |
| } |
| } while (true); |
| } |
| |
| @Test |
| public void test1() { |
| DebugConfig debugConfig = Debug.fixedConfig(0, 0, false, false, true, false, false, null, null, System.out); |
| try (DebugConfigScope dcs = new DebugConfigScope(debugConfig); Debug.Scope s = Debug.scope("DebugTimerTest")) { |
| |
| DebugTimer timerA = Debug.timer("TimerA"); |
| DebugTimer timerB = Debug.timer("TimerB"); |
| |
| long spinA; |
| long spinB; |
| |
| try (DebugCloseable a1 = timerA.start()) { |
| spinA = spin(50); |
| try (DebugCloseable b1 = timerB.start()) { |
| spinB = spin(50); |
| } |
| } |
| |
| Assert.assertTrue(timerB.getCurrentValue() < timerA.getCurrentValue()); |
| if (timerA.getFlat() != null && timerB.getFlat() != null) { |
| assertTrue(spinB >= spinA || timerB.getFlat().getCurrentValue() < timerA.getFlat().getCurrentValue()); |
| assertEquals(timerA.getFlat().getCurrentValue(), timerA.getCurrentValue() - timerB.getFlat().getCurrentValue(), 10D); |
| } |
| } |
| } |
| |
| @Test |
| public void test2() { |
| DebugConfig debugConfig = Debug.fixedConfig(0, 0, false, false, true, false, false, null, null, System.out); |
| try (DebugConfigScope dcs = new DebugConfigScope(debugConfig); Debug.Scope s = Debug.scope("DebugTimerTest")) { |
| DebugTimer timerC = Debug.timer("TimerC"); |
| try (DebugCloseable c1 = timerC.start()) { |
| spin(50); |
| try (DebugCloseable c2 = timerC.start()) { |
| spin(50); |
| try (DebugCloseable c3 = timerC.start()) { |
| spin(50); |
| try (DebugCloseable c4 = timerC.start()) { |
| spin(50); |
| try (DebugCloseable c5 = timerC.start()) { |
| spin(50); |
| } |
| } |
| } |
| } |
| } |
| if (timerC.getFlat() != null) { |
| assertEquals(timerC.getFlat().getCurrentValue(), timerC.getCurrentValue()); |
| } |
| } |
| } |
| |
| @Test |
| public void test3() { |
| DebugConfig debugConfig = Debug.fixedConfig(0, 0, false, false, true, false, false, null, null, System.out); |
| try (DebugConfigScope dcs = new DebugConfigScope(debugConfig); Debug.Scope s = Debug.scope("DebugTimerTest")) { |
| |
| DebugTimer timerD = Debug.timer("TimerD"); |
| DebugTimer timerE = Debug.timer("TimerE"); |
| |
| long spinD1; |
| long spinE; |
| |
| try (DebugCloseable d1 = timerD.start()) { |
| spinD1 = spin(50); |
| try (DebugCloseable e1 = timerE.start()) { |
| spinE = spin(50); |
| try (DebugCloseable d2 = timerD.start()) { |
| spin(50); |
| try (DebugCloseable d3 = timerD.start()) { |
| spin(50); |
| } |
| } |
| } |
| } |
| |
| Assert.assertTrue(timerE.getCurrentValue() < timerD.getCurrentValue()); |
| if (timerD.getFlat() != null && timerE.getFlat() != null) { |
| assertTrue(spinE >= spinD1 || timerE.getFlat().getCurrentValue() < timerD.getFlat().getCurrentValue()); |
| assertEquals(timerD.getFlat().getCurrentValue(), timerD.getCurrentValue() - timerE.getFlat().getCurrentValue(), 10D); |
| } |
| } |
| } |
| } |