| /* |
| * Copyright 2000-2006 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| package sun.jvm.hotspot.memory; |
| |
| import java.io.*; |
| import java.util.*; |
| import sun.jvm.hotspot.debugger.*; |
| import sun.jvm.hotspot.gc_interface.*; |
| import sun.jvm.hotspot.gc_implementation.parallelScavenge.*; |
| import sun.jvm.hotspot.oops.*; |
| import sun.jvm.hotspot.types.*; |
| import sun.jvm.hotspot.runtime.*; |
| |
| |
| public class Universe { |
| private static AddressField collectedHeapField; |
| private static VirtualConstructor heapConstructor; |
| private static sun.jvm.hotspot.types.OopField mainThreadGroupField; |
| private static sun.jvm.hotspot.types.OopField systemThreadGroupField; |
| |
| // single dimensional primitive array klasses |
| private static sun.jvm.hotspot.types.OopField boolArrayKlassObjField; |
| private static sun.jvm.hotspot.types.OopField byteArrayKlassObjField; |
| private static sun.jvm.hotspot.types.OopField charArrayKlassObjField; |
| private static sun.jvm.hotspot.types.OopField intArrayKlassObjField; |
| private static sun.jvm.hotspot.types.OopField shortArrayKlassObjField; |
| private static sun.jvm.hotspot.types.OopField longArrayKlassObjField; |
| private static sun.jvm.hotspot.types.OopField singleArrayKlassObjField; |
| private static sun.jvm.hotspot.types.OopField doubleArrayKlassObjField; |
| |
| // system obj array klass object |
| private static sun.jvm.hotspot.types.OopField systemObjArrayKlassObjField; |
| |
| static { |
| VM.registerVMInitializedObserver(new Observer() { |
| public void update(Observable o, Object data) { |
| initialize(VM.getVM().getTypeDataBase()); |
| } |
| }); |
| } |
| |
| private static synchronized void initialize(TypeDataBase db) { |
| Type type = db.lookupType("Universe"); |
| |
| collectedHeapField = type.getAddressField("_collectedHeap"); |
| |
| heapConstructor = new VirtualConstructor(db); |
| heapConstructor.addMapping("GenCollectedHeap", GenCollectedHeap.class); |
| heapConstructor.addMapping("ParallelScavengeHeap", ParallelScavengeHeap.class); |
| |
| mainThreadGroupField = type.getOopField("_main_thread_group"); |
| systemThreadGroupField = type.getOopField("_system_thread_group"); |
| |
| boolArrayKlassObjField = type.getOopField("_boolArrayKlassObj"); |
| byteArrayKlassObjField = type.getOopField("_byteArrayKlassObj"); |
| charArrayKlassObjField = type.getOopField("_charArrayKlassObj"); |
| intArrayKlassObjField = type.getOopField("_intArrayKlassObj"); |
| shortArrayKlassObjField = type.getOopField("_shortArrayKlassObj"); |
| longArrayKlassObjField = type.getOopField("_longArrayKlassObj"); |
| singleArrayKlassObjField = type.getOopField("_singleArrayKlassObj"); |
| doubleArrayKlassObjField = type.getOopField("_doubleArrayKlassObj"); |
| |
| systemObjArrayKlassObjField = type.getOopField("_systemObjArrayKlassObj"); |
| } |
| |
| public Universe() { |
| } |
| |
| public CollectedHeap heap() { |
| try { |
| return (CollectedHeap) heapConstructor.instantiateWrapperFor(collectedHeapField.getValue()); |
| } catch (WrongTypeException e) { |
| return new CollectedHeap(collectedHeapField.getValue()); |
| } |
| } |
| |
| /** Returns "TRUE" iff "p" points into the allocated area of the heap. */ |
| public boolean isIn(Address p) { |
| return heap().isIn(p); |
| } |
| |
| /** Returns "TRUE" iff "p" points into the reserved area of the heap. */ |
| public boolean isInReserved(Address p) { |
| return heap().isInReserved(p); |
| } |
| |
| private Oop newOop(OopHandle handle) { |
| return VM.getVM().getObjectHeap().newOop(handle); |
| } |
| |
| public Oop mainThreadGroup() { |
| return newOop(mainThreadGroupField.getValue()); |
| } |
| |
| public Oop systemThreadGroup() { |
| return newOop(systemThreadGroupField.getValue()); |
| } |
| |
| public Oop systemObjArrayKlassObj() { |
| return newOop(systemObjArrayKlassObjField.getValue()); |
| } |
| |
| // iterate through the single dimensional primitive array klasses |
| // refer to basic_type_classes_do(void f(klassOop)) in universe.cpp |
| public void basicTypeClassesDo(SystemDictionary.ClassVisitor visitor) { |
| visitor.visit((Klass)newOop(boolArrayKlassObjField.getValue())); |
| visitor.visit((Klass)newOop(byteArrayKlassObjField.getValue())); |
| visitor.visit((Klass)newOop(charArrayKlassObjField.getValue())); |
| visitor.visit((Klass)newOop(intArrayKlassObjField.getValue())); |
| visitor.visit((Klass)newOop(shortArrayKlassObjField.getValue())); |
| visitor.visit((Klass)newOop(longArrayKlassObjField.getValue())); |
| visitor.visit((Klass)newOop(singleArrayKlassObjField.getValue())); |
| visitor.visit((Klass)newOop(doubleArrayKlassObjField.getValue())); |
| } |
| |
| public void print() { printOn(System.out); } |
| public void printOn(PrintStream tty) { |
| heap().printOn(tty); |
| } |
| |
| // Check whether an element of a typeArrayOop with the given type must be |
| // aligned 0 mod 8. The typeArrayOop itself must be aligned at least this |
| // strongly. |
| public static boolean elementTypeShouldBeAligned(BasicType type) { |
| return type == BasicType.T_DOUBLE || type == BasicType.T_LONG; |
| } |
| |
| // Check whether an object field (static/non-static) of the given type must be |
| // aligned 0 mod 8. |
| public static boolean fieldTypeShouldBeAligned(BasicType type) { |
| return type == BasicType.T_DOUBLE || type == BasicType.T_LONG; |
| } |
| } |