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comparison 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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21555:d12eaef9af72 21556:48c1ebd24120
1 /*
2 * Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package com.oracle.jvmci.meta;
24
25 import java.util.*;
26
27 /**
28 * The name and signature of a foreign call. A foreign call differs from a normal compiled Java call
29 * in at least one of these aspects:
30 * <ul>
31 * <li>The call is to C/C++/assembler code.</li>
32 * <li>The call uses different conventions for passing parameters or returning values.</li>
33 * <li>The callee has different register saving semantics. For example, the callee may save all
34 * registers (apart from some specified temporaries) in which case the register allocator doesn't
35 * not need to spill all live registers around the call site.</li>
36 * <li>The call does not occur at an INVOKE* bytecode. Such a call could be transformed into a
37 * standard Java call if the foreign routine is a normal Java method and the runtime supports
38 * linking Java calls at arbitrary bytecodes.</li>
39 * </ul>
40 */
41 public class ForeignCallDescriptor {
42
43 private final String name;
44 private final Class<?> resultType;
45 private final Class<?>[] argumentTypes;
46
47 public ForeignCallDescriptor(String name, Class<?> resultType, Class<?>... argumentTypes) {
48 this.name = name;
49 this.resultType = resultType;
50 this.argumentTypes = argumentTypes;
51 }
52
53 /**
54 * Gets the name of this foreign call.
55 */
56 public String getName() {
57 return name;
58 }
59
60 /**
61 * Gets the return type of this foreign call.
62 */
63 public Class<?> getResultType() {
64 return resultType;
65 }
66
67 /**
68 * Gets the argument types of this foreign call.
69 */
70 public Class<?>[] getArgumentTypes() {
71 return argumentTypes.clone();
72 }
73
74 @Override
75 public int hashCode() {
76 return name.hashCode();
77 }
78
79 @Override
80 public boolean equals(Object obj) {
81 if (obj instanceof ForeignCallDescriptor) {
82 ForeignCallDescriptor other = (ForeignCallDescriptor) obj;
83 return other.name.equals(name) && other.resultType.equals(resultType) && Arrays.equals(other.argumentTypes, argumentTypes);
84 }
85 return false;
86 }
87
88 @Override
89 public String toString() {
90 StringBuilder sb = new StringBuilder(name).append('(');
91 String sep = "";
92 for (Class<?> arg : argumentTypes) {
93 sb.append(sep).append(arg.getSimpleName());
94 sep = ",";
95 }
96 return sb.append(')').append(resultType.getSimpleName()).toString();
97 }
98 }