Panda3D

conditionVarSpinlockImpl.cxx

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
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