objectMonitor.inline.hpp revision 1798:fa83ab460c54 
1/*
2 * Copyright (c) 1998, 2005, 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
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23 */
24
25inline intptr_t ObjectMonitor::is_entered(TRAPS) const {
26  if (THREAD == _owner || THREAD->is_lock_owned((address) _owner)) {
27    return 1;
28  }
29  return 0;
30}
31
32inline markOop ObjectMonitor::header() const {
33  return _header;
34}
35
36inline void ObjectMonitor::set_header(markOop hdr) {
37  _header = hdr;
38}
39
40inline intptr_t ObjectMonitor::count() const {
41  return _count;
42}
43
44inline void ObjectMonitor::set_count(intptr_t count) {
45  _count= count;
46}
47
48inline intptr_t ObjectMonitor::waiters() const {
49  return _waiters;
50}
51
52inline void* ObjectMonitor::owner() const {
53  return _owner;
54}
55
56inline void ObjectMonitor::clear() {
57  assert(_header, "Fatal logic error in ObjectMonitor header!");
58  assert(_count == 0, "Fatal logic error in ObjectMonitor count!");
59  assert(_waiters == 0, "Fatal logic error in ObjectMonitor waiters!");
60  assert(_recursions == 0, "Fatal logic error in ObjectMonitor recursions!");
61  assert(_object, "Fatal logic error in ObjectMonitor object!");
62  assert(_owner == 0, "Fatal logic error in ObjectMonitor owner!");
63
64  _header = NULL;
65  _object = NULL;
66}
67
68
69inline void* ObjectMonitor::object() const {
70  return _object;
71}
72
73inline void* ObjectMonitor::object_addr() {
74  return (void *)(&_object);
75}
76
77inline void ObjectMonitor::set_object(void* obj) {
78  _object = obj;
79}
80
81inline bool ObjectMonitor::check(TRAPS) {
82  if (THREAD != _owner) {
83    if (THREAD->is_lock_owned((address) _owner)) {
84      _owner = THREAD;  // regain ownership of inflated monitor
85      OwnerIsThread = 1 ;
86      assert (_recursions == 0, "invariant") ;
87    } else {
88      check_slow(THREAD);
89      return false;
90    }
91  }
92  return true;
93}
94
95
96// return number of threads contending for this monitor
97inline intptr_t ObjectMonitor::contentions() const {
98  return _count;
99}
100
101inline void ObjectMonitor::set_owner(void* owner) {
102  _owner = owner;
103  _recursions = 0;
104  _count = 0;
105}
106
107