1 /* 2 * Copyright (c) 1998, 2005, 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 inline intptr_t ObjectMonitor::is_entered(TRAPS) const { 26 if (THREAD == _owner || THREAD->is_lock_owned((address) _owner)) { 27 return 1; 28 } 29 return 0; 30 } 31 32 inline markOop ObjectMonitor::header() const { 33 return _header; 34 } 35 36 inline void ObjectMonitor::set_header(markOop hdr) { 37 _header = hdr; 38 } 39 40 inline intptr_t ObjectMonitor::count() const { 41 return _count; 42 } 43 44 inline void ObjectMonitor::set_count(intptr_t count) { 45 _count= count; 46 } 47 48 inline intptr_t ObjectMonitor::waiters() const { 49 return _waiters; 50 } 51 52 inline void* ObjectMonitor::owner() const { 53 return _owner; 54 } 55 56 inline void ObjectMonitor::clear() { 57 assert(_header, "Fatal logic error in ObjectMonitor header!"); 58 assert(_count == 0, "Fatal logic error in ObjectMonitor count!"); 59 assert(_waiters == 0, "Fatal logic error in ObjectMonitor waiters!"); 60 assert(_recursions == 0, "Fatal logic error in ObjectMonitor recursions!"); 61 assert(_object, "Fatal logic error in ObjectMonitor object!"); 62 assert(_owner == 0, "Fatal logic error in ObjectMonitor owner!"); 63 64 _header = NULL; 65 _object = NULL; 66 } 67 68 69 inline void* ObjectMonitor::object() const { 70 return _object; 71 } 72 73 inline void* ObjectMonitor::object_addr() { 74 return (void *)(&_object); 75 } 76 77 inline void ObjectMonitor::set_object(void* obj) { 78 _object = obj; 79 } 80 81 inline bool ObjectMonitor::check(TRAPS) { 82 if (THREAD != _owner) { 83 if (THREAD->is_lock_owned((address) _owner)) { 84 _owner = THREAD; // regain ownership of inflated monitor 85 OwnerIsThread = 1 ; 86 assert (_recursions == 0, "invariant") ; 87 } else { 88 check_slow(THREAD); 89 return false; 90 } 91 } 92 return true; 93 } 94 95 96 // return number of threads contending for this monitor 97 inline intptr_t ObjectMonitor::contentions() const { 98 return _count; 99 } 100 101 inline void ObjectMonitor::set_owner(void* owner) { 102 _owner = owner; 103 _recursions = 0; 104 _count = 0; 105 } 106