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comparison agent/src/share/classes/sun/jvm/hotspot/memory/Universe.java @ 22841:f9d003ea9023

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8046282: SA update 8049881: jstack not working on core files Summary: These changes add some definitions on the SA side and the supporting code on the hotspot side. Reviewed-by: sla, dsamersoff, mgronlun
author poonam
date Tue, 17 Feb 2015 19:59:05 -0800
parents 8e47bac5643a
children
comparison
equal deleted inserted replaced
22840:ec3982ff3fed 22841:f9d003ea9023
1 /* 1 /*
2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
54 private static AddressField narrowOopBaseField; 54 private static AddressField narrowOopBaseField;
55 private static CIntegerField narrowOopShiftField; 55 private static CIntegerField narrowOopShiftField;
56 private static AddressField narrowKlassBaseField; 56 private static AddressField narrowKlassBaseField;
57 private static CIntegerField narrowKlassShiftField; 57 private static CIntegerField narrowKlassShiftField;
58 58
59 public enum NARROW_OOP_MODE {
60 UnscaledNarrowOop,
61 ZeroBasedNarrowOop,
62 HeapBasedNarrowOop
63 }
64
59 static { 65 static {
60 VM.registerVMInitializedObserver(new Observer() { 66 VM.registerVMInitializedObserver(new Observer() {
61 public void update(Observable o, Object data) { 67 public void update(Observable o, Object data) {
62 initialize(VM.getVM().getTypeDataBase()); 68 initialize(VM.getVM().getTypeDataBase());
63 } 69 }
92 narrowKlassShiftField = type.getCIntegerField("_narrow_klass._shift"); 98 narrowKlassShiftField = type.getCIntegerField("_narrow_klass._shift");
93 } 99 }
94 100
95 public Universe() { 101 public Universe() {
96 } 102 }
97 103 public static String narrowOopModeToString(NARROW_OOP_MODE mode) {
104 switch (mode) {
105 case UnscaledNarrowOop:
106 return "32-bits Oops";
107 case ZeroBasedNarrowOop:
108 return "zero based Compressed Oops";
109 case HeapBasedNarrowOop:
110 return "Compressed Oops with base";
111 }
112 return "";
113 }
98 public CollectedHeap heap() { 114 public CollectedHeap heap() {
99 try { 115 try {
100 return (CollectedHeap) heapConstructor.instantiateWrapperFor(collectedHeapField.getValue()); 116 return (CollectedHeap) heapConstructor.instantiateWrapperFor(collectedHeapField.getValue());
101 } catch (WrongTypeException e) { 117 } catch (WrongTypeException e) {
102 return new CollectedHeap(collectedHeapField.getValue()); 118 return new CollectedHeap(collectedHeapField.getValue());