Mercurial > hg > truffle
view graal/com.oracle.jvmci.debug/src/com/oracle/jvmci/debug/internal/CloseableCounterImpl.java @ 21742:2e850dbf82ae
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> |
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date | Fri, 05 Jun 2015 14:12:49 +0200 |
parents | b1530a6cce8c |
children |
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/* * Copyright (c) 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 com.oracle.jvmci.debug.internal; import com.oracle.jvmci.debug.*; /** * A helper class for DebugValues that can nest and need to split out accumulated and flat values * for some kind of counter-like measurement. */ abstract class CloseableCounterImpl implements DebugCloseable { protected final CloseableCounterImpl parent; protected final AccumulatedDebugValue counter; protected final long start; protected long nestedAmountToSubtract; CloseableCounterImpl(CloseableCounterImpl parent, AccumulatedDebugValue counter) { this.parent = parent; this.start = getCounterValue(); this.counter = counter; } @Override public void close() { long end = getCounterValue(); long difference = end - start; if (parent != null) { if (!counter.getName().equals(parent.counter.getName())) { parent.nestedAmountToSubtract += difference; // Look for our counter in an outer scope and fix up // the adjustment to the flat count CloseableCounterImpl ancestor = parent.parent; while (ancestor != null) { if (ancestor.counter.getName().equals(counter.getName())) { ancestor.nestedAmountToSubtract -= difference; break; } ancestor = ancestor.parent; } } } long flatAmount = difference - nestedAmountToSubtract; counter.addToCurrentValue(difference); counter.flat.addToCurrentValue(flatAmount); } abstract long getCounterValue(); }