1 /* 2 * Copyright (c) 2013, 2015, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.debug.test; 24 25 import static org.graalvm.compiler.debug.DebugContext.DEFAULT_LOG_STREAM; 26 import static org.graalvm.compiler.debug.DebugContext.NO_CONFIG_CUSTOMIZERS; 27 import static org.graalvm.compiler.debug.DebugContext.NO_DESCRIPTION; 28 import static org.graalvm.compiler.debug.DebugContext.NO_GLOBAL_METRIC_VALUES; 29 import static org.junit.Assert.assertEquals; 30 31 import java.lang.management.ThreadMXBean; 32 33 import org.graalvm.compiler.debug.DebugCloseable; 34 import org.graalvm.compiler.debug.DebugContext; 35 import org.graalvm.compiler.debug.DebugOptions; 36 import org.graalvm.compiler.debug.Management; 37 import org.graalvm.compiler.debug.TimerKey; 38 import org.graalvm.compiler.options.OptionKey; 39 import org.graalvm.compiler.options.OptionValues; 40 import org.graalvm.util.EconomicMap; 41 import org.junit.Assume; 42 import org.junit.Before; 43 import org.junit.Test; 44 45 @SuppressWarnings("try") 46 public class TimerKeyTest { 47 48 private static final ThreadMXBean threadMXBean = Management.getThreadMXBean(); 49 50 @Before 51 public void checkCapabilities() { 52 Assume.assumeTrue("skipping management interface test", threadMXBean.isCurrentThreadCpuTimeSupported()); 53 } 54 55 /** 56 * Actively spins the current thread for at least a given number of milliseconds in such a way 57 * that timers for the current thread keep ticking over. 58 * 59 * @return the number of milliseconds actually spent spinning which is guaranteed to be >= 60 * {@code ms} 61 */ 62 private static long spin(long ms) { 63 long start = threadMXBean.getCurrentThreadCpuTime(); 64 do { 65 long durationMS = (threadMXBean.getCurrentThreadCpuTime() - start) / 1000; 66 if (durationMS >= ms) { 67 return durationMS; 68 } 69 } while (true); 70 } 71 72 /** 73 * Asserts that a timer replied recursively without any other interleaving timers has the same 74 * flat and accumulated times. 75 */ 76 @Test 77 public void test2() { 78 EconomicMap<OptionKey<?>, Object> map = EconomicMap.create(); 79 map.put(DebugOptions.Time, ""); 80 OptionValues options = new OptionValues(map); 81 DebugContext debug = DebugContext.create(options, NO_DESCRIPTION, NO_GLOBAL_METRIC_VALUES, DEFAULT_LOG_STREAM, NO_CONFIG_CUSTOMIZERS); 82 83 TimerKey timerC = DebugContext.timer("TimerC"); 84 try (DebugCloseable c1 = timerC.start(debug)) { 85 spin(50); 86 try (DebugCloseable c2 = timerC.start(debug)) { 87 spin(50); 88 try (DebugCloseable c3 = timerC.start(debug)) { 89 spin(50); 90 try (DebugCloseable c4 = timerC.start(debug)) { 91 spin(50); 92 try (DebugCloseable c5 = timerC.start(debug)) { 93 spin(50); 94 } 95 } 96 } 97 } 98 } 99 if (timerC.getFlat() != null) { 100 assertEquals(timerC.getFlat().getCurrentValue(debug), timerC.getCurrentValue(debug)); 101 } 102 } 103 }