1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ART_RUNTIME_LOCK_WORD_INL_H_
18#define ART_RUNTIME_LOCK_WORD_INL_H_
19
20#include "lock_word.h"
21#include "monitor_pool.h"
22
23namespace art {
24
25inline uint32_t LockWord::ThinLockOwner() const {
26  DCHECK_EQ(GetState(), kThinLocked);
27  CheckReadBarrierState();
28  return (value_ >> kThinLockOwnerShift) & kThinLockOwnerMask;
29}
30
31inline uint32_t LockWord::ThinLockCount() const {
32  DCHECK_EQ(GetState(), kThinLocked);
33  CheckReadBarrierState();
34  return (value_ >> kThinLockCountShift) & kThinLockCountMask;
35}
36
37inline Monitor* LockWord::FatLockMonitor() const {
38  DCHECK_EQ(GetState(), kFatLocked);
39  CheckReadBarrierState();
40  MonitorId mon_id = (value_ >> kMonitorIdShift) & kMonitorIdMask;
41  return MonitorPool::MonitorFromMonitorId(mon_id);
42}
43
44inline size_t LockWord::ForwardingAddress() const {
45  DCHECK_EQ(GetState(), kForwardingAddress);
46  return value_ << kStateSize;
47}
48
49inline LockWord::LockWord() : value_(0) {
50  DCHECK_EQ(GetState(), kUnlocked);
51}
52
53inline LockWord::LockWord(Monitor* mon, uint32_t rb_state)
54    : value_(mon->GetMonitorId() | (rb_state << kReadBarrierStateShift) |
55             (kStateFat << kStateShift)) {
56  DCHECK_EQ(rb_state & ~kReadBarrierStateMask, 0U);
57#ifndef __LP64__
58  DCHECK_ALIGNED(mon, kMonitorIdAlignment);
59#endif
60  DCHECK_EQ(FatLockMonitor(), mon);
61  DCHECK_LE(mon->GetMonitorId(), static_cast<uint32_t>(kMaxMonitorId));
62  CheckReadBarrierState();
63}
64
65inline int32_t LockWord::GetHashCode() const {
66  DCHECK_EQ(GetState(), kHashCode);
67  CheckReadBarrierState();
68  return (value_ >> kHashShift) & kHashMask;
69}
70
71}  // namespace art
72
73#endif  // ART_RUNTIME_LOCK_WORD_INL_H_
74