Mercurial > hg > graal-compiler
comparison graal/com.oracle.max.criutils/src/com/oracle/max/criutils/BaseProfilingInfo.java @ 5105:95b8a32a7cc3
preparations to avoid endless recompilations because of not updated profiling information
author | Christian Haeubl <christian.haeubl@oracle.com> |
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date | Mon, 12 Mar 2012 18:40:05 -0700 |
parents | |
children | dad1ac9dba7d |
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5068:6e7c1fb1980f | 5105:95b8a32a7cc3 |
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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. | |
18 * | |
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 */ | |
23 package com.oracle.max.criutils; | |
24 | |
25 import com.oracle.max.cri.ri.*; | |
26 | |
27 | |
28 /** | |
29 * Dummy profiling information in case that a method was not executed frequently enough so that | |
30 * no profiling information does exist yet, or in case that the profiling information should not be used. | |
31 */ | |
32 public final class BaseProfilingInfo implements RiProfilingInfo { | |
33 private static final RiProfilingInfo[] NO_PROFILING_INFO = new RiProfilingInfo[] { | |
34 new BaseProfilingInfo(RiExceptionSeen.TRUE), | |
35 new BaseProfilingInfo(RiExceptionSeen.FALSE), | |
36 new BaseProfilingInfo(RiExceptionSeen.NOT_SUPPORTED) | |
37 }; | |
38 | |
39 private final RiExceptionSeen exceptionSeen; | |
40 | |
41 BaseProfilingInfo(RiExceptionSeen exceptionSeen) { | |
42 this.exceptionSeen = exceptionSeen; | |
43 } | |
44 | |
45 @Override | |
46 public RiTypeProfile getTypeProfile(int bci) { | |
47 return null; | |
48 } | |
49 | |
50 @Override | |
51 public double getBranchTakenProbability(int bci) { | |
52 return -1; | |
53 } | |
54 | |
55 @Override | |
56 public double[] getSwitchProbabilities(int bci) { | |
57 return null; | |
58 } | |
59 | |
60 @Override | |
61 public RiExceptionSeen getExceptionSeen(int bci) { | |
62 return exceptionSeen; | |
63 } | |
64 | |
65 @Override | |
66 public int getExecutionCount(int bci) { | |
67 return -1; | |
68 } | |
69 | |
70 public static RiProfilingInfo get(RiExceptionSeen exceptionSeen) { | |
71 return NO_PROFILING_INFO[exceptionSeen.ordinal()]; | |
72 } | |
73 } |