46
47 private static Type metadataTypeArray[];
48
49 static {
50 VM.registerVMInitializedObserver(new Observer() {
51 public void update(Observable o, Object data) {
52 initialize(VM.getVM().getTypeDataBase());
53 }
54 });
55 }
56
57 private static void initialize(TypeDataBase db) {
58 // FileMapInfo
59 Type type = db.lookupType("FileMapInfo");
60 AddressField currentInfoField = type.getAddressField("_current_info");
61 long headerFieldOffset = type.getField("_header").getOffset();
62 Address headerAddress = currentInfoField.getValue().addOffsetTo(headerFieldOffset);
63 headerValue = headerAddress.getAddressAt(0);
64
65 // FileMapHeader
66 type = db.lookupType("FileMapInfo::FileMapHeader");
67 AddressField spaceField = type.getAddressField("_space[0]");
68 Address spaceValue = headerValue.addOffsetTo(type.getField("_space[0]").getOffset());
69 mdSpaceValue = spaceValue.addOffsetTo(3 * spaceField.getSize());
70
71 // SpaceInfo
72 type = db.lookupType("FileMapInfo::FileMapHeader::space_info");
73 long mdRegionBaseAddressOffset = type.getField("_addr._base").getOffset();
74 mdRegionBaseAddress = (mdSpaceValue.addOffsetTo(mdRegionBaseAddressOffset)).getAddressAt(0);
75 long mdRegionSizeOffset = type.getField("_used").getOffset();
76 long mdRegionSize = (mdSpaceValue.addOffsetTo(mdRegionSizeOffset)).getAddressAt(0).asLongValue();
77 mdRegionEndAddress = mdRegionBaseAddress.addOffsetTo(mdRegionSize);
78
79 populateMetadataTypeArray(db);
80 }
81
82 private static void populateMetadataTypeArray(TypeDataBase db) {
83 metadataTypeArray = new Type[8];
84
85 metadataTypeArray[0] = db.lookupType("ConstantPool");
86 metadataTypeArray[1] = db.lookupType("InstanceKlass");
87 metadataTypeArray[2] = db.lookupType("InstanceClassLoaderKlass");
88 metadataTypeArray[3] = db.lookupType("InstanceMirrorKlass");
89 metadataTypeArray[4] = db.lookupType("InstanceRefKlass");
90 metadataTypeArray[5] = db.lookupType("Method");
91 metadataTypeArray[6] = db.lookupType("ObjArrayKlass");
92 metadataTypeArray[7] = db.lookupType("TypeArrayKlass");
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46
47 private static Type metadataTypeArray[];
48
49 static {
50 VM.registerVMInitializedObserver(new Observer() {
51 public void update(Observable o, Object data) {
52 initialize(VM.getVM().getTypeDataBase());
53 }
54 });
55 }
56
57 private static void initialize(TypeDataBase db) {
58 // FileMapInfo
59 Type type = db.lookupType("FileMapInfo");
60 AddressField currentInfoField = type.getAddressField("_current_info");
61 long headerFieldOffset = type.getField("_header").getOffset();
62 Address headerAddress = currentInfoField.getValue().addOffsetTo(headerFieldOffset);
63 headerValue = headerAddress.getAddressAt(0);
64
65 // FileMapHeader
66 type = db.lookupType("FileMapHeader");
67 AddressField spaceField = type.getAddressField("_space[0]");
68 Address spaceValue = headerValue.addOffsetTo(type.getField("_space[0]").getOffset());
69 mdSpaceValue = spaceValue.addOffsetTo(3 * spaceField.getSize());
70
71 // SpaceInfo
72 type = db.lookupType("CDSFileMapRegion");
73 long mdRegionBaseAddressOffset = type.getField("_addr._base").getOffset();
74 mdRegionBaseAddress = (mdSpaceValue.addOffsetTo(mdRegionBaseAddressOffset)).getAddressAt(0);
75 long mdRegionSizeOffset = type.getField("_used").getOffset();
76 long mdRegionSize = (mdSpaceValue.addOffsetTo(mdRegionSizeOffset)).getAddressAt(0).asLongValue();
77 mdRegionEndAddress = mdRegionBaseAddress.addOffsetTo(mdRegionSize);
78
79 populateMetadataTypeArray(db);
80 }
81
82 private static void populateMetadataTypeArray(TypeDataBase db) {
83 metadataTypeArray = new Type[8];
84
85 metadataTypeArray[0] = db.lookupType("ConstantPool");
86 metadataTypeArray[1] = db.lookupType("InstanceKlass");
87 metadataTypeArray[2] = db.lookupType("InstanceClassLoaderKlass");
88 metadataTypeArray[3] = db.lookupType("InstanceMirrorKlass");
89 metadataTypeArray[4] = db.lookupType("InstanceRefKlass");
90 metadataTypeArray[5] = db.lookupType("Method");
91 metadataTypeArray[6] = db.lookupType("ObjArrayKlass");
92 metadataTypeArray[7] = db.lookupType("TypeArrayKlass");
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