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annotate graal/com.oracle.jvmci.debug/src/com/oracle/jvmci/debug/internal/CloseableCounterImpl.java @ 21742:2e850dbf82ae

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Truffle-DSL: fix NPE in getImplicitCastType if an implicitely casted type is short circuited. (reported-by: Mohaned Qunaibit)
author Christian Humer <christian.humer@gmail.com>
date Fri, 05 Jun 2015 14:12:49 +0200
parents b1530a6cce8c
children
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19686
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1 /*
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2 * Copyright (c) 2015, 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 */
21554
b1530a6cce8c renamed com.oracle.graal.[debug|options|hotspotvmconfig]* modules to com.oracle.jvmci.[debug|options|hotspotvmconfig]* modules (JBS:GRAAL-53)
Doug Simon <doug.simon@oracle.com>
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23 package com.oracle.jvmci.debug.internal;
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24
21554
b1530a6cce8c renamed com.oracle.graal.[debug|options|hotspotvmconfig]* modules to com.oracle.jvmci.[debug|options|hotspotvmconfig]* modules (JBS:GRAAL-53)
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25 import com.oracle.jvmci.debug.*;
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26
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27 /**
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28 * A helper class for DebugValues that can nest and need to split out accumulated and flat values
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29 * for some kind of counter-like measurement.
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30 */
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31 abstract class CloseableCounterImpl implements DebugCloseable {
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32
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33 protected final CloseableCounterImpl parent;
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34 protected final AccumulatedDebugValue counter;
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35 protected final long start;
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36 protected long nestedAmountToSubtract;
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37
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38 CloseableCounterImpl(CloseableCounterImpl parent, AccumulatedDebugValue counter) {
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39 this.parent = parent;
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40 this.start = getCounterValue();
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41 this.counter = counter;
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42 }
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43
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44 @Override
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45 public void close() {
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46 long end = getCounterValue();
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47 long difference = end - start;
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48 if (parent != null) {
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49 if (!counter.getName().equals(parent.counter.getName())) {
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50 parent.nestedAmountToSubtract += difference;
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51
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52 // Look for our counter in an outer scope and fix up
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53 // the adjustment to the flat count
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54 CloseableCounterImpl ancestor = parent.parent;
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55 while (ancestor != null) {
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56 if (ancestor.counter.getName().equals(counter.getName())) {
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57 ancestor.nestedAmountToSubtract -= difference;
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58 break;
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59 }
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60 ancestor = ancestor.parent;
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61 }
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62 }
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63 }
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64 long flatAmount = difference - nestedAmountToSubtract;
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65 counter.addToCurrentValue(difference);
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66 counter.flat.addToCurrentValue(flatAmount);
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67 }
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68
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69 abstract long getCounterValue();
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70 }