Mercurial > hg > truffle
view graal/com.oracle.jvmci.debug/src/com/oracle/jvmci/debug/internal/DebugHistogramRPrinter.java @ 21554:b1530a6cce8c
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> |
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date | Tue, 26 May 2015 23:21:15 +0200 |
parents | graal/com.oracle.graal.debug/src/com/oracle/graal/debug/internal/DebugHistogramRPrinter.java@a771cc1f10f5 |
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.internal; import java.io.*; import java.util.*; import com.oracle.jvmci.debug.*; import com.oracle.jvmci.debug.DebugHistogram.CountedValue; import com.oracle.jvmci.debug.DebugHistogram.Printer; /** * Renders a histogram as an R script to a given print stream. The R script emitted for a histogram * is a simple set of statements for defining a vector of named objects. */ public class DebugHistogramRPrinter implements Printer { private PrintStream os; private int limit; public DebugHistogramRPrinter(PrintStream os) { this(os, Integer.MAX_VALUE); } /** * @param os where to print * @param limit limits printing to the {@code limit} most frequent values */ public DebugHistogramRPrinter(PrintStream os, int limit) { this.os = os; this.limit = limit; } public void print(DebugHistogram histogram) { List<CountedValue> list = histogram.getValues(); if (list.isEmpty()) { return; } String var = histogram.getName().replace('-', '.').replace(' ', '_'); os.print(var + " <- c("); for (int i = 0; i < list.size() && i < limit; ++i) { CountedValue cv = list.get(i); if (i != 0) { os.print(", "); } os.print(cv.getCount()); } os.println(");"); os.print("names(" + var + ") <- c("); for (int i = 0; i < list.size() && i < limit; ++i) { CountedValue cv = list.get(i); if (i != 0) { os.print(", "); } os.print("\"" + cv.getValue() + "\""); } os.println(");"); } }