Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/runtime/ObjectMonitor.java @ 12226:7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
Reviewed-by: coleenp, mgerdin, hseigel
| author | ehelin |
|---|---|
| date | Mon, 12 Aug 2013 17:37:02 +0200 |
| parents | c18cbe5936b8 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2001, 2005, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.runtime; | |
| 26 | |
| 27 import java.util.*; | |
| 28 | |
| 29 import sun.jvm.hotspot.debugger.*; | |
| 30 import sun.jvm.hotspot.oops.*; | |
| 31 import sun.jvm.hotspot.types.*; | |
| 32 | |
| 33 public class ObjectMonitor extends VMObject { | |
| 34 static { | |
| 35 VM.registerVMInitializedObserver(new Observer() { | |
| 36 public void update(Observable o, Object data) { | |
| 37 initialize(VM.getVM().getTypeDataBase()); | |
| 38 } | |
| 39 }); | |
| 40 } | |
| 41 | |
| 42 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { | |
| 43 heap = VM.getVM().getObjectHeap(); | |
| 44 Type type = db.lookupType("ObjectMonitor"); | |
| 45 sun.jvm.hotspot.types.Field f = type.getField("_header"); | |
| 46 headerFieldOffset = f.getOffset(); | |
| 47 f = type.getField("_object"); | |
| 48 objectFieldOffset = f.getOffset(); | |
| 49 f = type.getField("_owner"); | |
| 50 ownerFieldOffset = f.getOffset(); | |
| 51 f = type.getField("FreeNext"); | |
| 52 FreeNextFieldOffset = f.getOffset(); | |
| 53 countField = type.getCIntegerField("_count"); | |
| 54 waitersField = type.getCIntegerField("_waiters"); | |
| 55 recursionsField = type.getCIntegerField("_recursions"); | |
| 56 } | |
| 57 | |
| 58 public ObjectMonitor(Address addr) { | |
| 59 super(addr); | |
| 60 } | |
| 61 | |
| 62 public Mark header() { | |
| 63 return new Mark(addr.addOffsetTo(headerFieldOffset)); | |
| 64 } | |
| 65 | |
| 66 // FIXME | |
| 67 // void set_header(markOop hdr); | |
| 68 | |
| 69 // FIXME: must implement and delegate to platform-dependent implementation | |
| 70 // public boolean isBusy(); | |
| 71 public boolean isEntered(sun.jvm.hotspot.runtime.Thread current) { | |
| 72 Address o = owner(); | |
| 73 if (current.threadObjectAddress().equals(o) || | |
| 74 current.isLockOwned(o)) { | |
| 75 return true; | |
| 76 } | |
| 77 return false; | |
| 78 } | |
| 79 | |
| 80 public Address owner() { return addr.getAddressAt(ownerFieldOffset); } | |
| 81 // FIXME | |
| 82 // void set_owner(void* owner); | |
| 83 | |
| 84 public long waiters() { return waitersField.getValue(addr); } | |
| 85 | |
| 86 public Address freeNext() { return addr.getAddressAt(FreeNextFieldOffset); } | |
| 87 // FIXME | |
| 88 // void set_queue(void* owner); | |
| 89 | |
| 90 public long count() { return countField.getValue(addr); } | |
| 91 // FIXME | |
| 92 // void set_count(intptr_t count); | |
| 93 | |
| 94 public long recursions() { return recursionsField.getValue(addr); } | |
| 95 | |
| 96 public OopHandle object() { | |
| 97 return addr.getOopHandleAt(objectFieldOffset); | |
| 98 } | |
| 99 | |
| 100 public long contentions() { | |
| 101 // refer to objectMonitor_xxx.inline.hpp - contentions definition. | |
| 102 // for Solaris and Linux, contentions is same as count. for Windows | |
| 103 // it is different (objectMonitor_win32.inline.hpp) | |
| 104 long count = count(); | |
| 105 if (VM.getVM().getOS().equals("win32")) { | |
| 106 // don't count the owner of the monitor | |
| 107 return count > 0? count - 1 : 0; | |
| 108 } else { | |
| 109 // Solaris and Linux | |
| 110 return count; | |
| 111 } | |
| 112 } | |
| 113 | |
| 114 // FIXME | |
| 115 // void* object_addr(); | |
| 116 // void set_object(void* obj); | |
| 117 | |
| 118 // The following four either aren't expressed as typed fields in | |
| 119 // vmStructs.cpp because they aren't strongly typed in the VM, or | |
| 120 // would confuse the SA's type system. | |
| 121 private static ObjectHeap heap; | |
| 122 private static long headerFieldOffset; | |
| 123 private static long objectFieldOffset; | |
| 124 private static long ownerFieldOffset; | |
| 125 private static long FreeNextFieldOffset; | |
| 126 private static CIntegerField countField; | |
| 127 private static CIntegerField waitersField; | |
| 128 private static CIntegerField recursionsField; | |
| 129 // FIXME: expose platform-dependent stuff | |
| 130 } |