Mercurial > hg > graal-jvmci-8
view graal/com.oracle.jvmci.debug/src/com/oracle/jvmci/debug/DebugHistogram.java @ 21789:5b9adb645217
fixed remnants of "graal" names in JVMCI code
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 08 Jun 2015 20:24:51 +0200 |
parents | b1530a6cce8c |
children |
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/* * Copyright (c) 2013, 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; import java.util.*; /** * Facility for recording value frequencies. */ public interface DebugHistogram { /** * Gets the name specified when this objected was {@linkplain Debug#createHistogram(String) * created}. */ String getName(); /** * Increments the count for a given value. */ void add(Object value); void add(Object value, long count); /** * A value and a frequency. The ordering imposed by {@link #compareTo(CountedValue)} places * values with higher frequencies first. */ public class CountedValue implements Comparable<CountedValue> { private long count; private final Object value; public CountedValue(long count, Object value) { this.count = count; this.value = value; } public int compareTo(CountedValue o) { if (count < o.count) { return 1; } else if (count > o.count) { return -1; } return 0; } @Override public String toString() { return count + " -> " + value; } public void inc() { count++; } public void add(long n) { count += n; } public long getCount() { return count; } public Object getValue() { return value; } } /** * Gets a list of the counted values, sorted in descending order of frequency. */ List<CountedValue> getValues(); /** * Interface for a service that can render a visualization of a histogram. */ public interface Printer { void print(DebugHistogram histogram); } }