Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/code/RuntimeStub.java @ 11997:cd25d3be91c5
8012144: multiple SIGSEGVs fails on staxf
Summary: Forward port of 7u change to add additional fence() on RMO platforms, with a load_acquire on all platforms
Reviewed-by: dholmes, kvn
author | vladidan |
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date | Tue, 06 Aug 2013 20:01:40 -0400 |
parents | 7588156f5cf9 |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2004, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.code; | |
26 | |
27 import java.util.*; | |
28 import sun.jvm.hotspot.debugger.*; | |
29 import sun.jvm.hotspot.runtime.*; | |
30 import sun.jvm.hotspot.types.*; | |
31 | |
32 public class RuntimeStub extends CodeBlob { | |
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33 private static CIntegerField callerMustGCArgumentsField; |
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34 |
0 | 35 static { |
36 VM.registerVMInitializedObserver(new Observer() { | |
37 public void update(Observable o, Object data) { | |
38 initialize(VM.getVM().getTypeDataBase()); | |
39 } | |
40 }); | |
41 } | |
42 | |
43 private static void initialize(TypeDataBase db) { | |
44 Type type = db.lookupType("RuntimeStub"); | |
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45 callerMustGCArgumentsField = type.getCIntegerField("_caller_must_gc_arguments"); |
0 | 46 |
47 // FIXME: add any needed fields | |
48 } | |
49 | |
50 public RuntimeStub(Address addr) { | |
51 super(addr); | |
52 } | |
53 | |
54 public boolean isRuntimeStub() { | |
55 return true; | |
56 } | |
57 | |
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58 public boolean callerMustGCArguments() { |
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59 return callerMustGCArgumentsField.getValue(addr) != 0; |
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60 } |
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61 |
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62 |
0 | 63 public String getName() { |
64 return "RuntimeStub: " + super.getName(); | |
65 } | |
66 } |