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 23 namespace art { 24 25 inline uint32_t LockWord::ThinLockOwner() const { 26 DCHECK_EQ(GetState(), kThinLocked); 27 CheckReadBarrierState(); 28 return (value_ >> kThinLockOwnerShift) & kThinLockOwnerMask; 29 } 30 31 inline uint32_t LockWord::ThinLockCount() const { 32 DCHECK_EQ(GetState(), kThinLocked); 33 CheckReadBarrierState(); 34 return (value_ >> kThinLockCountShift) & kThinLockCountMask; 35 } 36 37 inline 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 44 inline size_t LockWord::ForwardingAddress() const { 45 DCHECK_EQ(GetState(), kForwardingAddress); 46 return value_ << kForwardingAddressShift; 47 } 48 49 inline LockWord::LockWord() : value_(0) { 50 DCHECK_EQ(GetState(), kUnlocked); 51 } 52 53 inline LockWord::LockWord(Monitor* mon, uint32_t gc_state) 54 : value_(mon->GetMonitorId() | (gc_state << kGCStateShift) | (kStateFat << kStateShift)) { 55 #ifndef __LP64__ 56 DCHECK_ALIGNED(mon, kMonitorIdAlignment); 57 #endif 58 DCHECK_EQ(FatLockMonitor(), mon); 59 DCHECK_LE(mon->GetMonitorId(), static_cast<uint32_t>(kMaxMonitorId)); 60 CheckReadBarrierState(); 61 } 62 63 inline int32_t LockWord::GetHashCode() const { 64 DCHECK_EQ(GetState(), kHashCode); 65 CheckReadBarrierState(); 66 return (value_ >> kHashShift) & kHashMask; 67 } 68 69 } // namespace art 70 71 #endif // ART_RUNTIME_LOCK_WORD_INL_H_ 72
