jdk/src/share/classes/java/lang/invoke/MethodHandleStatics.java
author darcy
Thu, 27 Jun 2013 19:02:02 -0700
changeset 18569 0e46c17766b7
parent 16100 379f48d34516
child 24572 5c9e5961d21c
permissions -rw-r--r--
8019357: Fix doclint warnings in java.lang.invoke Reviewed-by: jrose
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
8821
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
     1
/*
14222
58f55d4dde46 7196190: Improve method of handling MethodHandles
jrose
parents: 13423
diff changeset
     2
 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
8821
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
     3
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
     4
 *
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
     5
 * This code is free software; you can redistribute it and/or modify it
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
     6
 * under the terms of the GNU General Public License version 2 only, as
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
     7
 * published by the Free Software Foundation.  Oracle designates this
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
     8
 * particular file as subject to the "Classpath" exception as provided
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
     9
 * by Oracle in the LICENSE file that accompanied this code.
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    10
 *
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    11
 * This code is distributed in the hope that it will be useful, but WITHOUT
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    12
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    13
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    14
 * version 2 for more details (a copy is included in the LICENSE file that
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    15
 * accompanied this code).
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    16
 *
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    17
 * You should have received a copy of the GNU General Public License version
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    18
 * 2 along with this work; if not, write to the Free Software Foundation,
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    19
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    20
 *
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    21
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    22
 * or visit www.oracle.com if you need additional information or have any
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    23
 * questions.
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    24
 */
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    25
8822
8145ab9f5f86 7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents: 8821
diff changeset
    26
package java.lang.invoke;
8821
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    27
9780
6fc3b49cfee4 7050328: (jsr-292) findConstructor throws ExceptionInInitializerError if run under SecurityManager
jrose
parents: 9731
diff changeset
    28
import java.security.AccessController;
6fc3b49cfee4 7050328: (jsr-292) findConstructor throws ExceptionInInitializerError if run under SecurityManager
jrose
parents: 9731
diff changeset
    29
import java.security.PrivilegedAction;
13423
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    30
import sun.misc.Unsafe;
9780
6fc3b49cfee4 7050328: (jsr-292) findConstructor throws ExceptionInInitializerError if run under SecurityManager
jrose
parents: 9731
diff changeset
    31
8821
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    32
/**
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    33
 * This class consists exclusively of static names internal to the
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    34
 * method handle implementation.
8822
8145ab9f5f86 7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents: 8821
diff changeset
    35
 * Usage:  {@code import static java.lang.invoke.MethodHandleStatics.*}
8821
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    36
 * @author John Rose, JSR 292 EG
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    37
 */
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    38
/*non-public*/ class MethodHandleStatics {
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    39
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    40
    private MethodHandleStatics() { }  // do not instantiate
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    41
13423
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    42
    static final Unsafe UNSAFE = Unsafe.getUnsafe();
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    43
9780
6fc3b49cfee4 7050328: (jsr-292) findConstructor throws ExceptionInInitializerError if run under SecurityManager
jrose
parents: 9731
diff changeset
    44
    static final boolean DEBUG_METHOD_HANDLE_NAMES;
13423
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    45
    static final boolean DUMP_CLASS_FILES;
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    46
    static final boolean TRACE_INTERPRETER;
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    47
    static final boolean TRACE_METHOD_LINKAGE;
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    48
    static final Integer COMPILE_THRESHOLD;
9780
6fc3b49cfee4 7050328: (jsr-292) findConstructor throws ExceptionInInitializerError if run under SecurityManager
jrose
parents: 9731
diff changeset
    49
    static {
13423
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    50
        final Object[] values = { false, false, false, false, null };
9780
6fc3b49cfee4 7050328: (jsr-292) findConstructor throws ExceptionInInitializerError if run under SecurityManager
jrose
parents: 9731
diff changeset
    51
        AccessController.doPrivileged(new PrivilegedAction<Void>() {
6fc3b49cfee4 7050328: (jsr-292) findConstructor throws ExceptionInInitializerError if run under SecurityManager
jrose
parents: 9731
diff changeset
    52
                public Void run() {
6fc3b49cfee4 7050328: (jsr-292) findConstructor throws ExceptionInInitializerError if run under SecurityManager
jrose
parents: 9731
diff changeset
    53
                    values[0] = Boolean.getBoolean("java.lang.invoke.MethodHandle.DEBUG_NAMES");
13423
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    54
                    values[1] = Boolean.getBoolean("java.lang.invoke.MethodHandle.DUMP_CLASS_FILES");
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    55
                    values[2] = Boolean.getBoolean("java.lang.invoke.MethodHandle.TRACE_INTERPRETER");
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    56
                    values[3] = Boolean.getBoolean("java.lang.invoke.MethodHandle.TRACE_METHOD_LINKAGE");
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    57
                    values[4] = Integer.getInteger("java.lang.invoke.MethodHandle.COMPILE_THRESHOLD");
9780
6fc3b49cfee4 7050328: (jsr-292) findConstructor throws ExceptionInInitializerError if run under SecurityManager
jrose
parents: 9731
diff changeset
    58
                    return null;
6fc3b49cfee4 7050328: (jsr-292) findConstructor throws ExceptionInInitializerError if run under SecurityManager
jrose
parents: 9731
diff changeset
    59
                }
6fc3b49cfee4 7050328: (jsr-292) findConstructor throws ExceptionInInitializerError if run under SecurityManager
jrose
parents: 9731
diff changeset
    60
            });
6fc3b49cfee4 7050328: (jsr-292) findConstructor throws ExceptionInInitializerError if run under SecurityManager
jrose
parents: 9731
diff changeset
    61
        DEBUG_METHOD_HANDLE_NAMES = (Boolean) values[0];
13423
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    62
        DUMP_CLASS_FILES          = (Boolean) values[1];
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    63
        TRACE_INTERPRETER         = (Boolean) values[2];
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    64
        TRACE_METHOD_LINKAGE      = (Boolean) values[3];
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    65
        COMPILE_THRESHOLD         = (Integer) values[4];
9780
6fc3b49cfee4 7050328: (jsr-292) findConstructor throws ExceptionInInitializerError if run under SecurityManager
jrose
parents: 9731
diff changeset
    66
    }
9731
d0f7a3e441c4 7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents: 9646
diff changeset
    67
8821
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    68
    /*non-public*/ static String getNameString(MethodHandle target, MethodType type) {
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    69
        if (type == null)
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    70
            type = target.type();
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    71
        MemberName name = null;
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    72
        if (target != null)
13423
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
    73
            name = target.internalMemberName();
8821
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    74
        if (name == null)
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    75
            return "invoke" + type;
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    76
        return name.getName() + type;
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    77
    }
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    78
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    79
    /*non-public*/ static String getNameString(MethodHandle target, MethodHandle typeHolder) {
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    80
        return getNameString(target, typeHolder == null ? (MethodType) null : typeHolder.type());
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    81
    }
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    82
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    83
    /*non-public*/ static String getNameString(MethodHandle target) {
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    84
        return getNameString(target, (MethodType) null);
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    85
    }
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    86
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    87
    /*non-public*/ static String addTypeString(Object obj, MethodHandle target) {
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    88
        String str = String.valueOf(obj);
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    89
        if (target == null)  return str;
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    90
        int paren = str.indexOf('(');
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    91
        if (paren >= 0) str = str.substring(0, paren);
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    92
        return str + target.type();
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    93
    }
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    94
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
    95
    // handy shared exception makers (they simplify the common case code)
14089
0a41b980d62a 8000989: smaller code changes to make future JSR 292 backports easier
twisti
parents: 13423
diff changeset
    96
    /*non-public*/ static InternalError newInternalError(String message, Throwable cause) {
0a41b980d62a 8000989: smaller code changes to make future JSR 292 backports easier
twisti
parents: 13423
diff changeset
    97
        return new InternalError(message, cause);
0a41b980d62a 8000989: smaller code changes to make future JSR 292 backports easier
twisti
parents: 13423
diff changeset
    98
    }
0a41b980d62a 8000989: smaller code changes to make future JSR 292 backports easier
twisti
parents: 13423
diff changeset
    99
    /*non-public*/ static InternalError newInternalError(Throwable cause) {
0a41b980d62a 8000989: smaller code changes to make future JSR 292 backports easier
twisti
parents: 13423
diff changeset
   100
        return new InternalError(cause);
0a41b980d62a 8000989: smaller code changes to make future JSR 292 backports easier
twisti
parents: 13423
diff changeset
   101
    }
8821
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   102
    /*non-public*/ static RuntimeException newIllegalStateException(String message) {
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   103
        return new IllegalStateException(message);
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   104
    }
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   105
    /*non-public*/ static RuntimeException newIllegalStateException(String message, Object obj) {
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   106
        return new IllegalStateException(message(message, obj));
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   107
    }
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   108
    /*non-public*/ static RuntimeException newIllegalArgumentException(String message) {
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   109
        return new IllegalArgumentException(message);
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   110
    }
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   111
    /*non-public*/ static RuntimeException newIllegalArgumentException(String message, Object obj) {
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   112
        return new IllegalArgumentException(message(message, obj));
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   113
    }
9646
5ebbe5ab084f 6939861: JVM should handle more conversion operations
jrose
parents: 8822
diff changeset
   114
    /*non-public*/ static RuntimeException newIllegalArgumentException(String message, Object obj, Object obj2) {
5ebbe5ab084f 6939861: JVM should handle more conversion operations
jrose
parents: 8822
diff changeset
   115
        return new IllegalArgumentException(message(message, obj, obj2));
5ebbe5ab084f 6939861: JVM should handle more conversion operations
jrose
parents: 8822
diff changeset
   116
    }
14222
58f55d4dde46 7196190: Improve method of handling MethodHandles
jrose
parents: 13423
diff changeset
   117
    /*non-public*/ static Error uncaughtException(Throwable ex) {
14089
0a41b980d62a 8000989: smaller code changes to make future JSR 292 backports easier
twisti
parents: 13423
diff changeset
   118
        throw newInternalError("uncaught exception", ex);
8821
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   119
    }
13423
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
   120
    static Error NYI() {
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
   121
        throw new AssertionError("NYI");
17843fff200d 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 10419
diff changeset
   122
    }
8821
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   123
    private static String message(String message, Object obj) {
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   124
        if (obj != null)  message = message + ": " + obj;
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   125
        return message;
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   126
    }
9646
5ebbe5ab084f 6939861: JVM should handle more conversion operations
jrose
parents: 8822
diff changeset
   127
    private static String message(String message, Object obj, Object obj2) {
5ebbe5ab084f 6939861: JVM should handle more conversion operations
jrose
parents: 8822
diff changeset
   128
        if (obj != null || obj2 != null)  message = message + ": " + obj + ", " + obj2;
5ebbe5ab084f 6939861: JVM should handle more conversion operations
jrose
parents: 8822
diff changeset
   129
        return message;
5ebbe5ab084f 6939861: JVM should handle more conversion operations
jrose
parents: 8822
diff changeset
   130
    }
8821
2836ee97ee27 6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
diff changeset
   131
}