Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotOptions.java @ 9903:b621e2a690dd
assert that -G: options are unique
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 06 Jun 2013 12:07:14 +0200 |
parents | 063a712fe8d8 |
children | fbad7372eccd |
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/* * Copyright (c) 2011, 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.graal.hotspot; import java.util.*; import com.oracle.graal.hotspot.logging.*; import com.oracle.graal.options.*; public class HotSpotOptions { private static final Map<String, OptionProvider> options = new HashMap<>(); static { ServiceLoader<OptionProvider> sl = ServiceLoader.loadInstalled(OptionProvider.class); for (OptionProvider provider : sl) { if (provider.getClass().getName().startsWith("com.oracle.graal")) { String name = provider.getName(); OptionProvider existing = options.put(name, provider); assert existing == null : name + " option has multiple definitions: " + existing.getClass() + " and " + provider.getClass(); } } } // Called from VM code public static boolean setOption(String option) { if (option.length() == 0) { return false; } Object value = null; String fieldName = null; String valueString = null; if (option.equals("+PrintFlags")) { printFlags(); return true; } char first = option.charAt(0); if (first == '+' || first == '-') { fieldName = option.substring(1); value = (first == '+'); } else { int index = option.indexOf('='); if (index == -1) { fieldName = option; valueString = null; } else { fieldName = option.substring(0, index); valueString = option.substring(index + 1); } } OptionProvider optionProvider = options.get(fieldName); if (optionProvider == null) { Logger.info("Could not find option " + fieldName + " (use -G:+PrintFlags to see Graal options)"); return false; } Class<?> optionType = optionProvider.getType(); if (value == null) { if (optionType == Boolean.TYPE || optionType == Boolean.class) { Logger.info("Value for boolean option '" + fieldName + "' must use '-G:+" + fieldName + "' or '-G:-" + fieldName + "' format"); return false; } if (valueString == null) { Logger.info("Value for option '" + fieldName + "' must use '-G:" + fieldName + "=<value>' format"); return false; } if (optionType == Float.class) { value = Float.parseFloat(valueString); } else if (optionType == Double.class) { value = Double.parseDouble(valueString); } else if (optionType == Integer.class) { value = Integer.parseInt(valueString); } else if (optionType == String.class) { value = valueString; } } else { if (optionType != Boolean.class) { Logger.info("Value for option '" + fieldName + "' must use '-G:" + fieldName + "=<value>' format"); return false; } } if (value != null) { optionProvider.getOptionValue().setValue(value); // Logger.info("Set option " + fieldName + " to " + value); } else { Logger.info("Wrong value \"" + valueString + "\" for option " + fieldName); return false; } return true; } private static void printFlags() { Logger.info("[Graal flags]"); SortedMap<String, OptionProvider> sortedOptions = new TreeMap<>(options); for (Map.Entry<String, OptionProvider> e : sortedOptions.entrySet()) { e.getKey(); OptionProvider opt = e.getValue(); Object value = opt.getOptionValue().getValue(); Logger.info(String.format("%9s %-40s = %-14s %s", opt.getType().getSimpleName(), e.getKey(), value, opt.getHelp())); } System.exit(0); } }