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 28 #include "runtime/atomic.hpp" 29 30 inline intptr_t ObjectMonitor::is_entered(TRAPS) const { 31 if (THREAD == _owner || THREAD->is_lock_owned((address) _owner)) { 32 return 1; 33 } 34 return 0; 35 } 36 37 inline markWord ObjectMonitor::header() const { 38 return Atomic::load(&_header); 39 } 40 41 inline volatile markWord* ObjectMonitor::header_addr() { 42 assert((intptr_t)this == (intptr_t)&_header, "sync code expects this"); 43 return &_header; 44 } 45 46 inline void ObjectMonitor::set_header(markWord hdr) { 47 Atomic::store(&_header, hdr); 48 } 49 50 inline jint ObjectMonitor::waiters() const { 51 return _waiters; 52 } 53 54 inline void* ObjectMonitor::owner() const { 55 return _owner; 56 } 57 58 inline void ObjectMonitor::clear() { 59 assert(Atomic::load(&_header).value() != 0, "must be non-zero"); 60 assert(_contentions == 0, "must be 0: contentions=%d", _contentions); 61 assert(_waiters == 0, "must be 0: waiters=%d", _waiters); 62 assert(_recursions == 0, "must be 0: recursions=" INTX_FORMAT, _recursions); 63 assert(_object != NULL, "must be non-NULL"); 64 assert(_owner == NULL, "must be NULL: owner=" INTPTR_FORMAT, p2i(_owner)); 65 66 Atomic::store(&_header, markWord::zero()); 67 _object = NULL; 68 } 69 70 inline void* ObjectMonitor::object() const { 71 return _object; 72 } 73 74 inline void* ObjectMonitor::object_addr() { 75 return (void *)(&_object); 76 } 77 78 inline void ObjectMonitor::set_object(void* obj) { 79 _object = obj; 80 } 81 82 // return number of threads contending for this monitor 83 inline jint ObjectMonitor::contentions() const { 84 return _contentions; 85 } 86 87 inline void ObjectMonitor::set_owner(void* owner) { 88 _owner = owner; 89 } 90 91 #endif // SHARE_RUNTIME_OBJECTMONITOR_INLINE_HPP