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annotate graal/com.oracle.jvmci.meta/src/com/oracle/jvmci/meta/ForeignCallDescriptor.java @ 21556:48c1ebd24120

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renamed com.oracle.graal.api[meta|code] modules to com.oracle.jvmci.[meta|code] (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Wed, 27 May 2015 00:36:16 +0200
parents graal/com.oracle.graal.api.meta/src/com/oracle/graal/api/meta/ForeignCallDescriptor.java@288c23143d47
children
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1 /*
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2 * Copyright (c) 2009, 2013, 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.jvmci.meta;
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24
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25 import java.util.*;
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26
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27 /**
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28 * The name and signature of a foreign call. A foreign call differs from a normal compiled Java call
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29 * in at least one of these aspects:
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30 * <ul>
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31 * <li>The call is to C/C++/assembler code.</li>
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32 * <li>The call uses different conventions for passing parameters or returning values.</li>
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33 * <li>The callee has different register saving semantics. For example, the callee may save all
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34 * registers (apart from some specified temporaries) in which case the register allocator doesn't
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35 * not need to spill all live registers around the call site.</li>
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36 * <li>The call does not occur at an INVOKE* bytecode. Such a call could be transformed into a
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37 * standard Java call if the foreign routine is a normal Java method and the runtime supports
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38 * linking Java calls at arbitrary bytecodes.</li>
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39 * </ul>
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40 */
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41 public class ForeignCallDescriptor {
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42
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43 private final String name;
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44 private final Class<?> resultType;
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45 private final Class<?>[] argumentTypes;
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46
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47 public ForeignCallDescriptor(String name, Class<?> resultType, Class<?>... argumentTypes) {
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48 this.name = name;
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49 this.resultType = resultType;
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50 this.argumentTypes = argumentTypes;
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51 }
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52
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53 /**
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54 * Gets the name of this foreign call.
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55 */
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56 public String getName() {
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57 return name;
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58 }
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59
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60 /**
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61 * Gets the return type of this foreign call.
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62 */
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63 public Class<?> getResultType() {
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64 return resultType;
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65 }
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66
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67 /**
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68 * Gets the argument types of this foreign call.
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69 */
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70 public Class<?>[] getArgumentTypes() {
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71 return argumentTypes.clone();
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72 }
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73
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74 @Override
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75 public int hashCode() {
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76 return name.hashCode();
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77 }
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78
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79 @Override
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80 public boolean equals(Object obj) {
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81 if (obj instanceof ForeignCallDescriptor) {
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82 ForeignCallDescriptor other = (ForeignCallDescriptor) obj;
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83 return other.name.equals(name) && other.resultType.equals(resultType) && Arrays.equals(other.argumentTypes, argumentTypes);
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84 }
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85 return false;
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86 }
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87
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88 @Override
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89 public String toString() {
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90 StringBuilder sb = new StringBuilder(name).append('(');
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91 String sep = "";
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92 for (Class<?> arg : argumentTypes) {
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93 sb.append(sep).append(arg.getSimpleName());
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94 sep = ",";
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95 }
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96 return sb.append(')').append(resultType.getSimpleName()).toString();
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97 }
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98 }