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 26 package jdk.internal.vm.annotation; 27 28 import java.lang.annotation.*; 29 30 /** 31 * A method or constructor may be annotated as "force inline" if the standard 32 * inlining metrics are to be ignored when the HotSpot VM inlines the method 33 * or constructor. 34 * <p> 35 * This annotation must be used sparingly. It is useful when the only 36 * reasonable alternative is to bind the name of a specific method or 37 * constructor into the HotSpot VM for special handling by the inlining policy. 38 * This annotation must not be relied on as an alternative to avoid tuning the 39 * VM's inlining policy. In a few cases, it may act as a temporary workaround 40 * until the profiling and inlining performed by the HotSpot VM is sufficiently 41 * improved. 42 * 43 * @implNote 44 * This annotation only takes effect for methods or constructors of classes 45 * loaded by the boot loader. Annotations on methods or constructors of classes 46 * loaded outside of the boot loader are ignored. 47 */ 48 @Target({ElementType.METHOD, ElementType.CONSTRUCTOR}) 49 // Android-changed: not used at runtime. 50 // @Retention(RetentionPolicy.RUNTIME) 51 @Retention(RetentionPolicy.SOURCE) 52 public @interface ForceInline { 53 } 54