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comparison jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotJVMCIRuntimeProvider.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.hotspot/src/jdk/internal/jvmci/hotspot/HotSpotJVMCIRuntimeProvider.java@b6b46b741102
children 57646377e480
comparison
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22671:97f30e4d0e95 22672:1bbd4a7c274b
1 /*
2 * Copyright (c) 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.hotspot;
24
25 import java.io.OutputStream;
26
27 import jdk.vm.ci.common.JVMCIError;
28 import jdk.vm.ci.compiler.Compiler;
29 import jdk.vm.ci.meta.JVMCIMetaAccessContext;
30 import jdk.vm.ci.meta.JavaKind;
31 import jdk.vm.ci.meta.JavaType;
32 import jdk.vm.ci.meta.ResolvedJavaType;
33 import jdk.vm.ci.runtime.JVMCIRuntime;
34 import sun.misc.Unsafe;
35
36 //JaCoCo Exclude
37
38 /**
39 * Configuration information for the HotSpot JVMCI runtime.
40 */
41 public interface HotSpotJVMCIRuntimeProvider extends JVMCIRuntime {
42
43 HotSpotVMConfig getConfig();
44
45 CompilerToVM getCompilerToVM();
46
47 Compiler getCompiler();
48
49 /**
50 * Gets an output stream that writes to the HotSpot's {@code tty} stream.
51 */
52 OutputStream getLogStream();
53
54 /**
55 * Converts a name to a Java type. This method attempts to resolve {@code name} to a
56 * {@link ResolvedJavaType}.
57 *
58 * @param name a well formed Java type in {@linkplain JavaType#getName() internal} format
59 * @param accessingType the context of resolution which must be non-null
60 * @param resolve specifies whether resolution failure results in an unresolved type being
61 * return or a {@link LinkageError} being thrown
62 * @return a Java type for {@code name} which is guaranteed to be of type
63 * {@link ResolvedJavaType} if {@code resolve == true}
64 * @throws LinkageError if {@code resolve == true} and the resolution failed
65 * @throws NullPointerException if {@code accessingClass} is {@code null}
66 */
67 JavaType lookupType(String name, HotSpotResolvedObjectType accessingType, boolean resolve);
68
69 /**
70 * Gets the JVMCI mirror for a {@link Class} object.
71 *
72 * @return the {@link ResolvedJavaType} corresponding to {@code javaClass}
73 */
74 ResolvedJavaType fromClass(Class<?> clazz);
75
76 JVMCIMetaAccessContext getMetaAccessContext();
77
78 /**
79 * The offset from the origin of an array to the first element.
80 *
81 * @return the offset in bytes
82 */
83 static int getArrayBaseOffset(JavaKind kind) {
84 switch (kind) {
85 case Boolean:
86 return Unsafe.ARRAY_BOOLEAN_BASE_OFFSET;
87 case Byte:
88 return Unsafe.ARRAY_BYTE_BASE_OFFSET;
89 case Char:
90 return Unsafe.ARRAY_CHAR_BASE_OFFSET;
91 case Short:
92 return Unsafe.ARRAY_SHORT_BASE_OFFSET;
93 case Int:
94 return Unsafe.ARRAY_INT_BASE_OFFSET;
95 case Long:
96 return Unsafe.ARRAY_LONG_BASE_OFFSET;
97 case Float:
98 return Unsafe.ARRAY_FLOAT_BASE_OFFSET;
99 case Double:
100 return Unsafe.ARRAY_DOUBLE_BASE_OFFSET;
101 case Object:
102 return Unsafe.ARRAY_OBJECT_BASE_OFFSET;
103 default:
104 throw new JVMCIError("%s", kind);
105 }
106 }
107
108 /**
109 * The scale used for the index when accessing elements of an array of this kind.
110 *
111 * @return the scale in order to convert the index into a byte offset
112 */
113 static int getArrayIndexScale(JavaKind kind) {
114 switch (kind) {
115 case Boolean:
116 return Unsafe.ARRAY_BOOLEAN_INDEX_SCALE;
117 case Byte:
118 return Unsafe.ARRAY_BYTE_INDEX_SCALE;
119 case Char:
120 return Unsafe.ARRAY_CHAR_INDEX_SCALE;
121 case Short:
122 return Unsafe.ARRAY_SHORT_INDEX_SCALE;
123 case Int:
124 return Unsafe.ARRAY_INT_INDEX_SCALE;
125 case Long:
126 return Unsafe.ARRAY_LONG_INDEX_SCALE;
127 case Float:
128 return Unsafe.ARRAY_FLOAT_INDEX_SCALE;
129 case Double:
130 return Unsafe.ARRAY_DOUBLE_INDEX_SCALE;
131 case Object:
132 return Unsafe.ARRAY_OBJECT_INDEX_SCALE;
133 default:
134 throw new JVMCIError("%s", kind);
135 }
136 }
137 }