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comparison jvmci/jdk.vm.ci.meta/src/jdk/vm/ci/meta/PlatformKind.java @ 22672:1bbd4a7c274b

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Rename jdk.internal.jvmci to jdk.vm.ci
author Tom Rodriguez <tom.rodriguez@oracle.com>
date Thu, 08 Oct 2015 17:28:41 -0700
parents jvmci/jdk.internal.jvmci.meta/src/jdk/internal/jvmci/meta/PlatformKind.java@c10d5fb9776b
children 4b58c92e939b
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22671:97f30e4d0e95 22672:1bbd4a7c274b
1 /*
2 * Copyright (c) 2013, 2015, 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 jdk.vm.ci.meta;
24
25 /**
26 * Represents a platform-specific low-level type for values.
27 */
28 public interface PlatformKind {
29
30 String name();
31
32 public interface Key {
33
34 }
35
36 public class EnumKey<E extends Enum<E>> implements Key {
37 private final Enum<E> e;
38
39 public EnumKey(Enum<E> e) {
40 this.e = e;
41 }
42
43 @Override
44 public int hashCode() {
45 return e.ordinal() ^ e.name().hashCode();
46 }
47
48 @Override
49 public boolean equals(Object obj) {
50 if (obj == this) {
51 return true;
52 }
53 if (obj instanceof EnumKey) {
54 EnumKey<?> that = (EnumKey<?>) obj;
55 return this.e == that.e;
56 }
57 return false;
58 }
59 }
60
61 /**
62 * Gets a value associated with this object that can be used as a stable key in a map. The
63 * {@link Object#hashCode()} implementation of the returned value should be stable between VM
64 * executions.
65 */
66 Key getKey();
67
68 /**
69 * Get the size in bytes of this {@link PlatformKind}.
70 */
71 int getSizeInBytes();
72
73 /**
74 * Returns how many primitive values fit in this {@link PlatformKind}. For scalar types this is
75 * one, for SIMD types it may be higher.
76 */
77 int getVectorLength();
78
79 /**
80 * Gets a single type char that identifies this type for use in debug output.
81 */
82 char getTypeChar();
83 }