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comparison jvmci/com.oracle.jvmci.meta/src/com/oracle/jvmci/meta/MethodHandleAccessProvider.java @ 21798:395ac43a8578

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moved JVMCI sources from graal/ to jvmci/ directory
author Doug Simon <doug.simon@oracle.com>
date Tue, 09 Jun 2015 00:22:49 +0200
parents graal/com.oracle.jvmci.meta/src/com/oracle/jvmci/meta/MethodHandleAccessProvider.java@48c1ebd24120
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21797:42452d2dfbec 21798:395ac43a8578
1 /*
2 * Copyright (c) 2014, 2014, 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.lang.invoke.*;
26
27 /**
28 * Interface to access the internals of the {@link MethodHandle} implementation of the VM. An
29 * implementation of this interface is usually required to access non-public classes, methods, and
30 * fields of {@link MethodHandle}, i.e., data that is not standardized by the Java specification.
31 */
32 public interface MethodHandleAccessProvider {
33
34 /**
35 * Identification for methods defined on the class {@link MethodHandle} that are processed by
36 * the {@link MethodHandleAccessProvider}.
37 */
38 public enum IntrinsicMethod {
39 /** The method {@code MethodHandle.invokeBasic}. */
40 INVOKE_BASIC,
41 /** The method {@code MethodHandle.linkToStatic}. */
42 LINK_TO_STATIC,
43 /** The method {@code MethodHandle.linkToSpecial}. */
44 LINK_TO_SPECIAL,
45 /** The method {@code MethodHandle.linkToVirtual}. */
46 LINK_TO_VIRTUAL,
47 /** The method {@code MethodHandle.linkToInterface}. */
48 LINK_TO_INTERFACE
49 }
50
51 /**
52 * Returns the method handle method intrinsic identifier for the provided method, or
53 * {@code null} if the method is not an intrinsic processed by this interface.
54 */
55 IntrinsicMethod lookupMethodHandleIntrinsic(ResolvedJavaMethod method);
56
57 /**
58 * Resolves the invocation target for an invocation of {@link IntrinsicMethod#INVOKE_BASIC
59 * MethodHandle.invokeBasic} with the given constant receiver {@link MethodHandle}. Returns
60 * {@code null} if the invocation target is not available at this time.
61 * <p>
62 * The first invocations of a method handle can use an interpreter to lookup the actual invoked
63 * method; frequently executed method handles can use Java bytecode generation to avoid the
64 * interpreter overhead. If the parameter forceBytecodeGeneration is set to true, the VM should
65 * try to generate bytecodes before this method returns.
66 */
67 ResolvedJavaMethod resolveInvokeBasicTarget(JavaConstant methodHandle, boolean forceBytecodeGeneration);
68
69 /**
70 * Resolves the invocation target for an invocation of a {@code MethodHandle.linkTo*} method
71 * with the given constant member name. The member name is the last parameter of the
72 * {@code linkTo*} method. Returns {@code null} if the invocation target is not available at
73 * this time.
74 */
75 ResolvedJavaMethod resolveLinkToTarget(JavaConstant memberName);
76 }