Mercurial > hg > truffle
diff agent/src/share/classes/sun/jvm/hotspot/memory/Universe.java @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | ba764ed4b6f2 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/agent/src/share/classes/sun/jvm/hotspot/memory/Universe.java Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,155 @@ +/* + * 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; + } +}