1 /*
2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
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
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
95 narrowOopBaseField = type.getAddressField("_narrow_oop._base");
96 narrowOopShiftField = type.getCIntegerField("_narrow_oop._shift");
97 narrowKlassBaseField = type.getAddressField("_narrow_klass._base");
98 narrowKlassShiftField = type.getCIntegerField("_narrow_klass._shift");
99 }
100
101 public Universe() {
102 }
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 }
114 public CollectedHeap heap() {
115 try {
116 return (CollectedHeap) heapConstructor.instantiateWrapperFor(collectedHeapField.getValue());
117 } catch (WrongTypeException e) {
118 return new CollectedHeap(collectedHeapField.getValue());
119 }
120 }
121
122 public static long getNarrowOopBase() {
123 if (narrowOopBaseField.getValue() == null) {
124 return 0;
125 } else {
126 return narrowOopBaseField.getValue().minus(null);
127 }
128 }
129
130 public static int getNarrowOopShift() {
131 return (int)narrowOopShiftField.getValue();
132 }
133
134 public static long getNarrowKlassBase() {
135 if (narrowKlassBaseField.getValue() == null) {
136 return 0;
137 } else {
138 return narrowKlassBaseField.getValue().minus(null);
139 }
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1 /*
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.
4 *
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
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
95 narrowOopBaseField = type.getAddressField("_narrow_oop._base");
96 narrowOopShiftField = type.getCIntegerField("_narrow_oop._shift");
97 narrowKlassBaseField = type.getAddressField("_narrow_klass._base");
98 narrowKlassShiftField = type.getCIntegerField("_narrow_klass._shift");
99 }
100
101 public Universe() {
102 }
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 }
114 public CollectedHeap heap() {
115 return (CollectedHeap) heapConstructor.instantiateWrapperFor(collectedHeapField.getValue());
116 }
117
118 public static long getNarrowOopBase() {
119 if (narrowOopBaseField.getValue() == null) {
120 return 0;
121 } else {
122 return narrowOopBaseField.getValue().minus(null);
123 }
124 }
125
126 public static int getNarrowOopShift() {
127 return (int)narrowOopShiftField.getValue();
128 }
129
130 public static long getNarrowKlassBase() {
131 if (narrowKlassBaseField.getValue() == null) {
132 return 0;
133 } else {
134 return narrowKlassBaseField.getValue().minus(null);
135 }
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