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comparison agent/src/share/classes/sun/jvm/hotspot/code/RuntimeStub.java @ 3908:7588156f5cf9

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7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244) Reviewed-by: kvn
author never
date Mon, 05 Sep 2011 17:09:05 -0700
parents c18cbe5936b8
children
comparison
equal deleted inserted replaced
3907:7b5c767f229c 3908:7588156f5cf9
28 import sun.jvm.hotspot.debugger.*; 28 import sun.jvm.hotspot.debugger.*;
29 import sun.jvm.hotspot.runtime.*; 29 import sun.jvm.hotspot.runtime.*;
30 import sun.jvm.hotspot.types.*; 30 import sun.jvm.hotspot.types.*;
31 31
32 public class RuntimeStub extends CodeBlob { 32 public class RuntimeStub extends CodeBlob {
33 private static CIntegerField callerMustGCArgumentsField;
34
33 static { 35 static {
34 VM.registerVMInitializedObserver(new Observer() { 36 VM.registerVMInitializedObserver(new Observer() {
35 public void update(Observable o, Object data) { 37 public void update(Observable o, Object data) {
36 initialize(VM.getVM().getTypeDataBase()); 38 initialize(VM.getVM().getTypeDataBase());
37 } 39 }
38 }); 40 });
39 } 41 }
40 42
41 private static void initialize(TypeDataBase db) { 43 private static void initialize(TypeDataBase db) {
42 Type type = db.lookupType("RuntimeStub"); 44 Type type = db.lookupType("RuntimeStub");
45 callerMustGCArgumentsField = type.getCIntegerField("_caller_must_gc_arguments");
43 46
44 // FIXME: add any needed fields 47 // FIXME: add any needed fields
45 } 48 }
46 49
47 public RuntimeStub(Address addr) { 50 public RuntimeStub(Address addr) {
50 53
51 public boolean isRuntimeStub() { 54 public boolean isRuntimeStub() {
52 return true; 55 return true;
53 } 56 }
54 57
58 public boolean callerMustGCArguments() {
59 return callerMustGCArgumentsField.getValue(addr) != 0;
60 }
61
62
55 public String getName() { 63 public String getName() {
56 return "RuntimeStub: " + super.getName(); 64 return "RuntimeStub: " + super.getName();
57 } 65 }
58 } 66 }