00001 /** @file rutz/spin_lock_darwin.h */ 00002 00003 /////////////////////////////////////////////////////////////////////// 00004 // 00005 // Copyright (c) 2007-2007 University of Southern California 00006 // Rob Peters <rjpeters at usc dot edu> 00007 // 00008 // created: Tue Sep 4 14:08:02 2007 00009 // commit: $Id: spin_lock_darwin.h 8741 2007-09-05 21:03:52Z rjpeters $ 00010 // $HeadURL: svn://isvn.usc.edu/software/invt/trunk/saliency/src/rutz/spin_lock_darwin.h $ 00011 // 00012 // -------------------------------------------------------------------- 00013 // 00014 // This file is part of GroovX. 00015 // [http://www.klab.caltech.edu/rjpeters/groovx/] 00016 // 00017 // GroovX is free software; you can redistribute it and/or modify it 00018 // under the terms of the GNU General Public License as published by 00019 // the Free Software Foundation; either version 2 of the License, or 00020 // (at your option) any later version. 00021 // 00022 // GroovX is distributed in the hope that it will be useful, but 00023 // WITHOUT ANY WARRANTY; without even the implied warranty of 00024 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00025 // General Public License for more details. 00026 // 00027 // You should have received a copy of the GNU General Public License 00028 // along with GroovX; if not, write to the Free Software Foundation, 00029 // Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. 00030 // 00031 /////////////////////////////////////////////////////////////////////// 00032 00033 #ifndef GROOVX_RUTZ_SPIN_LOCK_DARWIN_H_UTC20070904210802_DEFINED 00034 #define GROOVX_RUTZ_SPIN_LOCK_DARWIN_H_UTC20070904210802_DEFINED 00035 00036 #include <libkern/OSAtomic.h> 00037 00038 namespace rutz 00039 { 00040 00041 class spin_lock_darwin 00042 { 00043 private: 00044 OSSpinLock m_lock; 00045 00046 spin_lock_darwin(const spin_lock_darwin&); // not implemented 00047 spin_lock_darwin& operator=(const spin_lock_darwin&); // not implemented 00048 00049 public: 00050 spin_lock_darwin() 00051 { OSSpinLockUnlock(&m_lock); } 00052 00053 void lock() 00054 { OSSpinLockLock(&m_lock); } 00055 00056 bool try_lock() 00057 { return OSSpinLockTry(&m_lock); } 00058 00059 void unlock() 00060 { OSSpinLockUnlock(&m_lock); } 00061 }; 00062 00063 } 00064 00065 static const char vcid_groovx_rutz_spin_lock_darwin_h_utc20070904210802[] = "$Id: spin_lock_darwin.h 8741 2007-09-05 21:03:52Z rjpeters $ $HeadURL: svn://isvn.usc.edu/software/invt/trunk/saliency/src/rutz/spin_lock_darwin.h $"; 00066 #endif // !GROOVX_RUTZ_SPIN_LOCK_DARWIN_H_UTC20070904210802DEFINED
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