1/*
2 * Copyright (c) 2012, 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.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package jdk.internal.vm.annotation;
27
28import java.lang.annotation.*;
29
30/**
31 * A method or constructor may be annotated as "don't inline" if the inlining of
32 * this method should not be performed by the HotSpot VM.
33 * <p>
34 * This annotation must be used sparingly.  It is useful when the only
35 * reasonable alternative is to bind the name of a specific method or
36 * constructor into the HotSpot VM for special handling by the inlining policy.
37 * This annotation must not be relied on as an alternative to avoid tuning the
38 * VM's inlining policy.  In a few cases, it may act as a temporary workaround
39 * until the profiling and inlining performed by the HotSpot VM is sufficiently
40 * improved.
41 *
42 * @implNote
43 * This annotation only takes effect for methods or constructors of classes
44 * loaded by the boot loader.  Annotations on methods or constructors of classes
45 * loaded outside of the boot loader are ignored.
46 */
47@Target({ElementType.METHOD, ElementType.CONSTRUCTOR})
48@Retention(RetentionPolicy.RUNTIME)
49public @interface DontInline {
50}
51