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comparison agent/src/share/classes/sun/jvm/hotspot/utilities/RobustOopDeterminator.java @ 6848:8e47bac5643a

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7054512: Compress class pointers after perm gen removal Summary: support of compress class pointers in the compilers. Reviewed-by: kvn, twisti
author roland
date Tue, 09 Oct 2012 10:11:38 +0200
parents da91efe96a93
children
comparison
equal deleted inserted replaced
6847:65d07d9ee446 6848:8e47bac5643a
51 } 51 }
52 52
53 private static void initialize(TypeDataBase db) { 53 private static void initialize(TypeDataBase db) {
54 Type type = db.lookupType("oopDesc"); 54 Type type = db.lookupType("oopDesc");
55 55
56 if (VM.getVM().isCompressedHeadersEnabled()) { 56 if (VM.getVM().isCompressedKlassPointersEnabled()) {
57 // klassField = type.getNarrowOopField("_metadata._compressed_klass"); 57 klassField = type.getAddressField("_metadata._compressed_klass");
58 throw new InternalError("unimplemented");
59 } else { 58 } else {
60 klassField = type.getAddressField("_metadata._klass"); 59 klassField = type.getAddressField("_metadata._klass");
61 } 60 }
62 } 61 }
63 62
68 if (!VM.getVM().getUniverse().isIn(oop)) { 67 if (!VM.getVM().getUniverse().isIn(oop)) {
69 return false; 68 return false;
70 } 69 }
71 try { 70 try {
72 // Try to instantiate the Klass 71 // Try to instantiate the Klass
73 Metadata.instantiateWrapperFor(klassField.getValue(oop)); 72 if (VM.getVM().isCompressedKlassPointersEnabled()) {
73 Metadata.instantiateWrapperFor(oop.getCompKlassAddressAt(klassField.getOffset()));
74 } else {
75 Metadata.instantiateWrapperFor(klassField.getValue(oop));
76 }
74 return true; 77 return true;
75 } 78 }
76 catch (AddressException e) { 79 catch (AddressException e) {
77 return false; 80 return false;
78 } 81 }