Panda3D
|
00001 // Filename: conditionVarSpinlockImpl.cxx 00002 // Created by: drose (11Apr06) 00003 // 00004 //////////////////////////////////////////////////////////////////// 00005 // 00006 // PANDA 3D SOFTWARE 00007 // Copyright (c) Carnegie Mellon University. All rights reserved. 00008 // 00009 // All use of this software is subject to the terms of the revised BSD 00010 // license. You should have received a copy of this license along 00011 // with this source code in a file named "LICENSE." 00012 // 00013 //////////////////////////////////////////////////////////////////// 00014 00015 #include "selectThreadImpl.h" 00016 00017 #ifdef MUTEX_SPINLOCK 00018 00019 #include "conditionVarSpinlockImpl.h" 00020 00021 //////////////////////////////////////////////////////////////////// 00022 // Function: ConditionVarSpinlockImpl::wait 00023 // Access: Public 00024 // Description: 00025 //////////////////////////////////////////////////////////////////// 00026 void ConditionVarSpinlockImpl:: 00027 wait() { 00028 AtomicAdjust::Integer current = _event; 00029 _mutex.release(); 00030 00031 while (AtomicAdjust::get(_event) == current) { 00032 } 00033 00034 _mutex.acquire(); 00035 } 00036 00037 #endif // MUTEX_SPINLOCK