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annotate graal/com.oracle.max.cri/src/com/oracle/max/cri/intrinsics/IntrinsicImpl.java @ 4142:bc8527f3071c

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Adjust code base to new level of warnings.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sun, 18 Dec 2011 05:24:06 +0100
parents e233f5660da4
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1 /*
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2 * Copyright (c) 2011, 2011, 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 */
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23 package com.oracle.max.cri.intrinsics;
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24
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25 import java.util.*;
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26 import java.util.Map.*;
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27 import java.util.concurrent.*;
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28
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29 import com.sun.cri.ci.*;
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30 import com.sun.cri.ri.*;
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31
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32 /**
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33 * Empty marker interface for intrinsic implementations.
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34 *
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35 * Note: It is not necessary that this class is in the CRI, it could also be part of the compiler
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36 * implementation. However, it might be useful for different compilers, so it is here for now.
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37 */
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38 public interface IntrinsicImpl {
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39
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40 /**
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41 * Registry that maps intrinsic ID strings to implementation objects.
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42 * Intrinsic ID strings can either be explicitly defined as String constants, or inferred from the
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43 * fully qualified name and signature of a method.
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44 */
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45 public class Registry implements Iterable<Map.Entry<String, IntrinsicImpl>> {
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46 private Map<String, IntrinsicImpl> implRegistry = new ConcurrentHashMap<>(100, 0.75f, 1);
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47
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48 /**
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49 * Add an implementation object for an explicitly defined intrinsic ID string.
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50 */
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51 public void add(String intrinsicId, IntrinsicImpl impl) {
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52 assert !implRegistry.containsKey(intrinsicId);
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53 implRegistry.put(intrinsicId, impl);
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54 }
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55
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56 /**
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57 * Add an implementation object for an intrinsic implicitly defined by its fully qualified name and signature.
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58 */
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59 public void add(String className, String methodName, String signature, IntrinsicImpl impl) {
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60 add(literalId(className, methodName, signature), impl);
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61 }
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62
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63 /**
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64 * Gets the implementation object for a method. First, the {@link RiMethod#intrinsic() explicit ID string} of the
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65 * method is searched in the registry, then the implicit ID inferred from the method name and signature.
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66 * @return The intrinsic implementation object, or {@code null} if none is found.
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67 */
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68 public IntrinsicImpl get(RiResolvedMethod method) {
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69 String intrinsic = method.intrinsic();
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70 if (intrinsic != null) {
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71 IntrinsicImpl impl = implRegistry.get(intrinsic);
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72 if (impl != null) {
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73 return impl;
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74 }
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75 }
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76 return implRegistry.get(literalId(method));
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77 }
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78
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79
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80 private static String literalId(String className, String methodName, String signature) {
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81 return CiUtil.toInternalName(className) + methodName + signature;
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82 }
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83
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84 private static String literalId(RiMethod method) {
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85 return method.holder().name() + method.name() + method.signature().asString();
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86 }
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87
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88 @Override
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89 public Iterator<Entry<String, IntrinsicImpl>> iterator() {
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90 return implRegistry.entrySet().iterator();
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91 }
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92 }
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93 }