DeoptimizationAction.java revision 12651:6ef01bd40ce2 
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.
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.
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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 */
23package jdk.vm.ci.meta;
24
25/**
26 * Specifies the action that should be taken by the runtime in case a certain deoptimization is
27 * triggered.
28 */
29public enum DeoptimizationAction {
30    /**
31     * Do not invalidate the machine code. This is typically used when deoptimizing at a point where
32     * it's highly likely nothing will change the likelihood of the deoptimization happening again.
33     * For example, a compiled array allocation where the size is negative.
34     */
35    None(false),
36
37    /**
38     * Do not invalidate the machine code, but schedule a recompilation if this deoptimization is
39     * triggered too often.
40     */
41    RecompileIfTooManyDeopts(true),
42
43    /**
44     * Invalidate the machine code and reset the profiling information.
45     */
46    InvalidateReprofile(true),
47
48    /**
49     * Invalidate the machine code and immediately schedule a recompilation. This is typically used
50     * when deoptimizing to resolve an unresolved symbol in which case extra profiling is not
51     * required to determine that the deoptimization will not re-occur.
52     */
53    InvalidateRecompile(true),
54
55    /**
56     * Invalidate the machine code and stop compiling the outermost method of this compilation.
57     */
58    InvalidateStopCompiling(true);
59
60    private final boolean invalidatesCompilation;
61
62    DeoptimizationAction(boolean invalidatesCompilation) {
63        this.invalidatesCompilation = invalidatesCompilation;
64    }
65
66    public boolean doesInvalidateCompilation() {
67        return invalidatesCompilation;
68    }
69
70}
71