27 import sun.jvm.hotspot.debugger.*; 28 import sun.jvm.hotspot.memory.*; 29 import sun.jvm.hotspot.runtime.*; 30 import sun.jvm.hotspot.oops.*; 31 import sun.jvm.hotspot.types.*; 32 33 public class ClassLoaderData extends VMObject { 34 static { 35 VM.registerVMInitializedObserver(new java.util.Observer() { 36 public void update(java.util.Observable o, Object data) { 37 initialize(VM.getVM().getTypeDataBase()); 38 } 39 }); 40 } 41 42 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { 43 Type type = db.lookupType("ClassLoaderData"); 44 classLoaderFieldOffset = type.getAddressField("_class_loader").getOffset(); 45 nextField = type.getAddressField("_next"); 46 klassesField = new MetadataField(type.getAddressField("_klasses"), 0); 47 isUnsafeAnonymousField = new CIntField(type.getCIntegerField("_is_unsafe_anonymous"), 0); 48 dictionaryField = type.getAddressField("_dictionary"); 49 } 50 51 private static long classLoaderFieldOffset; 52 private static AddressField nextField; 53 private static MetadataField klassesField; 54 private static CIntField isUnsafeAnonymousField; 55 private static AddressField dictionaryField; 56 57 public ClassLoaderData(Address addr) { 58 super(addr); 59 } 60 61 public Dictionary dictionary() { 62 Address tmp = dictionaryField.getValue(); 63 return (Dictionary) VMObjectFactory.newObject(Dictionary.class, tmp); 64 } 65 66 public static ClassLoaderData instantiateWrapperFor(Address addr) { 67 if (addr == null) { 68 return null; 69 } 70 return new ClassLoaderData(addr); 71 } 72 73 public Oop getClassLoader() { 74 Address addr = getAddress().addOffsetTo(classLoaderFieldOffset); 75 VMOopHandle vmOopHandle = VMObjectFactory.newObject(VMOopHandle.class, addr); 76 return vmOopHandle.resolve(); 77 } 78 79 public boolean getisUnsafeAnonymous() { 80 return isUnsafeAnonymousField.getValue(this) != 0; 81 } 82 83 public ClassLoaderData next() { 84 return instantiateWrapperFor(nextField.getValue(getAddress())); 85 } 86 87 public Klass getKlasses() { return (Klass)klassesField.getValue(this); } 88 89 /** Lookup an already loaded class. If not found null is returned. */ 90 public Klass find(String className) { 91 for (Klass l = getKlasses(); l != null; l = l.getNextLinkKlass()) { 92 if (l.getName().equals(className)) { 93 return l; 94 } 95 } 96 return null; 97 } 98 99 /** Iterate over all klasses - including object, primitive 100 array klasses */ | 27 import sun.jvm.hotspot.debugger.*; 28 import sun.jvm.hotspot.memory.*; 29 import sun.jvm.hotspot.runtime.*; 30 import sun.jvm.hotspot.oops.*; 31 import sun.jvm.hotspot.types.*; 32 33 public class ClassLoaderData extends VMObject { 34 static { 35 VM.registerVMInitializedObserver(new java.util.Observer() { 36 public void update(java.util.Observable o, Object data) { 37 initialize(VM.getVM().getTypeDataBase()); 38 } 39 }); 40 } 41 42 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { 43 Type type = db.lookupType("ClassLoaderData"); 44 classLoaderFieldOffset = type.getAddressField("_class_loader").getOffset(); 45 nextField = type.getAddressField("_next"); 46 klassesField = new MetadataField(type.getAddressField("_klasses"), 0); 47 isShortlivedField = new CIntField(type.getCIntegerField("_is_shortlived"), 0); 48 dictionaryField = type.getAddressField("_dictionary"); 49 } 50 51 private static long classLoaderFieldOffset; 52 private static AddressField nextField; 53 private static MetadataField klassesField; 54 private static CIntField isShortlivedField; 55 private static AddressField dictionaryField; 56 57 public ClassLoaderData(Address addr) { 58 super(addr); 59 } 60 61 public Dictionary dictionary() { 62 Address tmp = dictionaryField.getValue(); 63 return (Dictionary) VMObjectFactory.newObject(Dictionary.class, tmp); 64 } 65 66 public static ClassLoaderData instantiateWrapperFor(Address addr) { 67 if (addr == null) { 68 return null; 69 } 70 return new ClassLoaderData(addr); 71 } 72 73 public Oop getClassLoader() { 74 Address addr = getAddress().addOffsetTo(classLoaderFieldOffset); 75 VMOopHandle vmOopHandle = VMObjectFactory.newObject(VMOopHandle.class, addr); 76 return vmOopHandle.resolve(); 77 } 78 79 public boolean getisShortlived() { 80 return isShortlivedField.getValue(this) != 0; 81 } 82 83 public ClassLoaderData next() { 84 return instantiateWrapperFor(nextField.getValue(getAddress())); 85 } 86 87 public Klass getKlasses() { return (Klass)klassesField.getValue(this); } 88 89 /** Lookup an already loaded class. If not found null is returned. */ 90 public Klass find(String className) { 91 for (Klass l = getKlasses(); l != null; l = l.getNextLinkKlass()) { 92 if (l.getName().equals(className)) { 93 return l; 94 } 95 } 96 return null; 97 } 98 99 /** Iterate over all klasses - including object, primitive 100 array klasses */ |