1 /*
2 * Copyright (c) 1998, 2019, 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 *
23 */
24
25 #ifndef SHARE_RUNTIME_OBJECTMONITOR_INLINE_HPP
26 #define SHARE_RUNTIME_OBJECTMONITOR_INLINE_HPP
27
is_entered(TRAPS) const28 inline 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
header() const35 inline markOop ObjectMonitor::header() const {
36 return _header;
37 }
38
header_addr()39 inline volatile markOop* ObjectMonitor::header_addr() {
40 assert((intptr_t)this == (intptr_t)&_header, "sync code expects this");
41 return &_header;
42 }
43
set_header(markOop hdr)44 inline void ObjectMonitor::set_header(markOop hdr) {
45 _header = hdr;
46 }
47
waiters() const48 inline jint ObjectMonitor::waiters() const {
49 return _waiters;
50 }
51
owner() const52 inline void* ObjectMonitor::owner() const {
53 return _owner;
54 }
55
clear()56 inline void ObjectMonitor::clear() {
57 assert(_header != NULL, "must be non-NULL");
58 assert(_contentions == 0, "must be 0: contentions=%d", _contentions);
59 assert(_waiters == 0, "must be 0: waiters=%d", _waiters);
60 assert(_recursions == 0, "must be 0: recursions=" INTPTR_FORMAT, _recursions);
61 assert(_object != NULL, "must be non-NULL");
62 assert(_owner == NULL, "must be NULL: owner=" INTPTR_FORMAT, p2i(_owner));
63
64 _header = NULL;
65 _object = NULL;
66 }
67
object() const68 inline void* ObjectMonitor::object() const {
69 return _object;
70 }
71
object_addr()72 inline void* ObjectMonitor::object_addr() {
73 return (void *)(&_object);
74 }
75
set_object(void * obj)76 inline void ObjectMonitor::set_object(void* obj) {
77 _object = obj;
78 }
79
check(TRAPS)80 inline bool ObjectMonitor::check(TRAPS) {
81 if (THREAD != _owner) {
82 if (THREAD->is_lock_owned((address) _owner)) {
83 _owner = THREAD; // regain ownership of inflated monitor
84 assert (_recursions == 0, "invariant") ;
85 } else {
86 check_slow(THREAD);
87 return false;
88 }
89 }
90 return true;
91 }
92
93 // return number of threads contending for this monitor
contentions() const94 inline jint ObjectMonitor::contentions() const {
95 return _contentions;
96 }
97
set_owner(void * owner)98 inline void ObjectMonitor::set_owner(void* owner) {
99 _owner = owner;
100 }
101
102 #endif // SHARE_RUNTIME_OBJECTMONITOR_INLINE_HPP
103