1 /*
2  * Copyright (c) 2011, 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
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23  */
24 
25 package sun.jvm.hotspot.opto;
26 
27 import java.io.PrintStream;
28 import java.util.*;
29 import sun.jvm.hotspot.debugger.*;
30 import sun.jvm.hotspot.runtime.*;
31 import sun.jvm.hotspot.oops.*;
32 import sun.jvm.hotspot.types.*;
33 
34 public class SafePointNode extends MultiNode {
35   static {
VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } })36     VM.registerVMInitializedObserver(new Observer() {
37         public void update(Observable o, Object data) {
38           initialize(VM.getVM().getTypeDataBase());
39         }
40       });
41   }
42 
initialize(TypeDataBase db)43   private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
44     Type type      = db.lookupType("SafePointNode");
45     jvmsField = type.getAddressField("_jvms");
46   }
47 
48   private static AddressField jvmsField;
49 
SafePointNode(Address addr)50   public SafePointNode(Address addr) {
51     super(addr);
52   }
53 
jvms()54   public JVMState jvms() {
55     return JVMState.create(jvmsField.getValue(getAddress()));
56   }
57 
dumpSpec(PrintStream out)58   public void dumpSpec(PrintStream out) {
59     JVMState jvms = jvms();
60     if (jvms != null) out.print(" !");
61     while (jvms != null) {
62       Method m = jvms.method().method();
63       int bci = jvms.bci();
64       out.print(" " + m.getMethodHolder().getName().asString().replace('/', '.') + "::" + m.getName().asString() + " @ bci:" + bci);
65       jvms = jvms.caller();
66     }
67   }
68 }
69