Mercurial > hg > truffle
annotate src/share/tools/whitebox/sun/hotspot/WhiteBox.java @ 7287:76c9023ed438
Remove now useless prefix arguments for jtt unittests
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Thu, 20 Dec 2012 17:06:59 +0100 |
parents | da91efe96a93 |
children | 4102b59539ce |
rev | line source |
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5915 | 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 */ | |
24 | |
25 package sun.hotspot; | |
26 import java.security.BasicPermission; | |
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27 import sun.hotspot.parser.DiagnosticCommand; |
5915 | 28 |
29 public class WhiteBox { | |
30 | |
31 @SuppressWarnings("serial") | |
32 public static class WhiteBoxPermission extends BasicPermission { | |
33 public WhiteBoxPermission(String s) { | |
34 super(s); | |
35 } | |
36 } | |
37 | |
38 private WhiteBox() {} | |
39 private static final WhiteBox instance = new WhiteBox(); | |
40 private static native void registerNatives(); | |
41 | |
42 /** | |
43 * Returns the singleton WhiteBox instance. | |
44 * | |
45 * The returned WhiteBox object should be carefully guarded | |
46 * by the caller, since it can be used to read and write data | |
47 * at arbitrary memory addresses. It must never be passed to | |
48 * untrusted code. | |
49 */ | |
50 public synchronized static WhiteBox getWhiteBox() { | |
51 SecurityManager sm = System.getSecurityManager(); | |
52 if (sm != null) { | |
53 sm.checkPermission(new WhiteBoxPermission("getInstance")); | |
54 } | |
55 return instance; | |
56 } | |
57 | |
58 static { | |
59 registerNatives(); | |
60 } | |
61 | |
62 // Memory | |
63 public native long getObjectAddress(Object o); | |
64 public native int getHeapOopSize(); | |
65 | |
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66 // Runtime |
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67 // Make sure class name is in the correct format |
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68 public boolean isClassAlive(String name) { |
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69 return isClassAlive0(name.replace('.', '/')); |
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70 } |
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coleenp
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71 private native boolean isClassAlive0(String name); |
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72 |
5915 | 73 // G1 |
74 public native boolean g1InConcurrentMark(); | |
75 public native boolean g1IsHumongous(Object o); | |
76 public native long g1NumFreeRegions(); | |
77 public native int g1RegionSize(); | |
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78 public native Object[] parseCommandLine(String commandline, DiagnosticCommand[] args); |
5915 | 79 } |