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annotate graal/com.oracle.jvmci.debug/src/com/oracle/jvmci/debug/internal/TimerImpl.java @ 21554:b1530a6cce8c

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renamed com.oracle.graal.[debug|options|hotspotvmconfig]* modules to com.oracle.jvmci.[debug|options|hotspotvmconfig]* modules (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Tue, 26 May 2015 23:21:15 +0200
parents graal/com.oracle.graal.debug/src/com/oracle/graal/debug/internal/TimerImpl.java@fa75218e3942
children f5b549811bac
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1 /*
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2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.jvmci.debug.internal;
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25 import static com.oracle.jvmci.debug.DebugCloseable.*;
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27 import java.lang.management.*;
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28 import java.util.concurrent.*;
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30 import com.oracle.jvmci.debug.*;
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31
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32
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33 public final class TimerImpl extends AccumulatedDebugValue implements DebugTimer {
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34
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35 private static final ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
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36
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37 /**
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38 * Records the most recent active timer.
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39 */
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40 private static final ThreadLocal<CloseableCounterImpl> currentTimer = new ThreadLocal<>();
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41
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42 static class FlatTimer extends DebugValue implements DebugTimer {
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43 private TimerImpl accm;
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44
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45 public FlatTimer(String name, boolean conditional) {
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46 super(name + "_Flat", conditional);
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47 }
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48
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49 @Override
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50 public String toString(long value) {
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51 return valueToString(value);
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52 }
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53
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54 public TimeUnit getTimeUnit() {
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55 return accm.getTimeUnit();
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56 }
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57
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58 public DebugCloseable start() {
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59 return accm.start();
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60 }
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61 }
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62
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63 public TimerImpl(String name, boolean conditional) {
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64 super(name, conditional, new FlatTimer(name, conditional));
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65 ((FlatTimer) flat).accm = this;
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66 }
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67
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68 @Override
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69 public DebugCloseable start() {
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70 if (!isConditional() || Debug.isTimeEnabled()) {
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71 AbstractTimer result;
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72 if (threadMXBean.isCurrentThreadCpuTimeSupported()) {
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73 result = new CpuTimeTimer(this);
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74 } else {
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75 result = new SystemNanosTimer(this);
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76 }
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77 currentTimer.set(result);
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78 return result;
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79 } else {
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80 return VOID_CLOSEABLE;
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81 }
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82 }
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83
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84 public static String valueToString(long value) {
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85 return String.format("%d.%d ms", value / 1000000, (value / 100000) % 10);
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86 }
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87
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88 public DebugTimer getFlat() {
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89 return (FlatTimer) flat;
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90 }
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91
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92 @Override
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93 public String toString(long value) {
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94 return valueToString(value);
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95 }
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96
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97 public TimeUnit getTimeUnit() {
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98 return TimeUnit.NANOSECONDS;
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99 }
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100
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101 private abstract static class AbstractTimer extends CloseableCounterImpl implements DebugCloseable {
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102
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103 private AbstractTimer(AccumulatedDebugValue counter) {
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104 super(currentTimer.get(), counter);
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105 }
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106
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107 @Override
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108 public void close() {
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109 super.close();
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110 currentTimer.set(parent);
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111 }
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112 }
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113
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114 private final class SystemNanosTimer extends AbstractTimer {
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115
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116 public SystemNanosTimer(TimerImpl timer) {
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117 super(timer);
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118 }
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119
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120 @Override
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121 protected long getCounterValue() {
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122 return System.nanoTime();
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123 }
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124 }
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125
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126 private final class CpuTimeTimer extends AbstractTimer {
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127
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128 public CpuTimeTimer(TimerImpl timer) {
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129 super(timer);
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130 }
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131
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132 @Override
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Tom Rodriguez <tom.rodriguez@oracle.com>
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133 protected long getCounterValue() {
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134 return threadMXBean.getCurrentThreadCpuTime();
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135 }
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136 }
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5a84f5548fc4 More work on new debug infrastructure.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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137 }