objectMonitor.inline.hpp revision 1879:f95d63e2154a 
1/*
2 * Copyright (c) 1998, 2010, 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
25#ifndef SHARE_VM_RUNTIME_OBJECTMONITOR_INLINE_HPP
26#define SHARE_VM_RUNTIME_OBJECTMONITOR_INLINE_HPP
27
28inline intptr_t ObjectMonitor::is_entered(TRAPS) const {
29  if (THREAD == _owner || THREAD->is_lock_owned((address) _owner)) {
30    return 1;
31  }
32  return 0;
33}
34
35inline markOop ObjectMonitor::header() const {
36  return _header;
37}
38
39inline void ObjectMonitor::set_header(markOop hdr) {
40  _header = hdr;
41}
42
43inline intptr_t ObjectMonitor::count() const {
44  return _count;
45}
46
47inline void ObjectMonitor::set_count(intptr_t count) {
48  _count= count;
49}
50
51inline intptr_t ObjectMonitor::waiters() const {
52  return _waiters;
53}
54
55inline void* ObjectMonitor::owner() const {
56  return _owner;
57}
58
59inline void ObjectMonitor::clear() {
60  assert(_header, "Fatal logic error in ObjectMonitor header!");
61  assert(_count == 0, "Fatal logic error in ObjectMonitor count!");
62  assert(_waiters == 0, "Fatal logic error in ObjectMonitor waiters!");
63  assert(_recursions == 0, "Fatal logic error in ObjectMonitor recursions!");
64  assert(_object, "Fatal logic error in ObjectMonitor object!");
65  assert(_owner == 0, "Fatal logic error in ObjectMonitor owner!");
66
67  _header = NULL;
68  _object = NULL;
69}
70
71
72inline void* ObjectMonitor::object() const {
73  return _object;
74}
75
76inline void* ObjectMonitor::object_addr() {
77  return (void *)(&_object);
78}
79
80inline void ObjectMonitor::set_object(void* obj) {
81  _object = obj;
82}
83
84inline bool ObjectMonitor::check(TRAPS) {
85  if (THREAD != _owner) {
86    if (THREAD->is_lock_owned((address) _owner)) {
87      _owner = THREAD;  // regain ownership of inflated monitor
88      OwnerIsThread = 1 ;
89      assert (_recursions == 0, "invariant") ;
90    } else {
91      check_slow(THREAD);
92      return false;
93    }
94  }
95  return true;
96}
97
98
99// return number of threads contending for this monitor
100inline intptr_t ObjectMonitor::contentions() const {
101  return _count;
102}
103
104inline void ObjectMonitor::set_owner(void* owner) {
105  _owner = owner;
106  _recursions = 0;
107  _count = 0;
108}
109
110
111#endif // SHARE_VM_RUNTIME_OBJECTMONITOR_INLINE_HPP
112