001/*
002 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package jdk.internal.jvmci.meta;
024
025/**
026 * Specifies the action that should be taken by the runtime in case a certain deoptimization is
027 * triggered.
028 */
029public enum DeoptimizationAction {
030    /**
031     * Do not invalidate the machine code. This is typically used when deoptimizing at a point where
032     * it's highly likely nothing will change the likelihood of the deoptimization happening again.
033     * For example, a compiled array allocation where the size is negative.
034     */
035    None(false),
036
037    /**
038     * Do not invalidate the machine code, but schedule a recompilation if this deoptimization is
039     * triggered too often.
040     */
041    RecompileIfTooManyDeopts(true),
042
043    /**
044     * Invalidate the machine code and reset the profiling information.
045     */
046    InvalidateReprofile(true),
047
048    /**
049     * Invalidate the machine code and immediately schedule a recompilation. This is typically used
050     * when deoptimizing to resolve an unresolved symbol in which case extra profiling is not
051     * required to determine that the deoptimization will not re-occur.
052     */
053    InvalidateRecompile(true),
054
055    /**
056     * Invalidate the machine code and stop compiling the outermost method of this compilation.
057     */
058    InvalidateStopCompiling(true);
059
060    private final boolean invalidatesCompilation;
061
062    private DeoptimizationAction(boolean invalidatesCompilation) {
063        this.invalidatesCompilation = invalidatesCompilation;
064    }
065
066    public boolean doesInvalidateCompilation() {
067        return invalidatesCompilation;
068    }
069
070}