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itkBarrier.h

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00001 /*========================================================================= 00002 00003 Program: Insight Segmentation & Registration Toolkit 00004 Module: $RCSfile: itkBarrier.h,v $ 00005 Language: C++ 00006 Date: $Date: 2003/09/10 14:29:01 $ 00007 Version: $Revision: 1.7 $ 00008 00009 Copyright (c) Insight Software Consortium. All rights reserved. 00010 See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details. 00011 00012 This software is distributed WITHOUT ANY WARRANTY; without even 00013 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 00014 PURPOSE. See the above copyright notices for more information. 00015 00016 =========================================================================*/ 00017 #ifndef __itkBarrier_h_ 00018 #define __itkBarrier_h_ 00019 00020 #include "itkLightObject.h" 00021 #include "itkConditionVariable.h" 00022 #include "itkMutexLock.h" 00023 00024 #ifdef ITK_USE_FETCHOP_BARRIERS 00025 extern "C" { 00026 #include <sys/pmo.h> 00027 #include <fetchop.h> 00028 } 00029 #endif 00030 00031 #ifdef ITK_USE_SPROC 00032 extern "C" { 00033 #include <ulocks.h> 00034 } 00035 #endif 00036 00037 namespace itk { 00038 00062 class ITKCommon_EXPORT Barrier : public LightObject 00063 { 00064 public: 00066 typedef Barrier Self; 00067 typedef LightObject Superclass; 00068 typedef SmartPointer<Self> Pointer; 00069 typedef SmartPointer<const Self> ConstPointer; 00070 00072 itkNewMacro(Self); 00073 00075 itkTypeMacro(Barrier, Object); 00076 00080 void Initialize(unsigned int); 00081 00085 void Wait(); 00086 00087 private: 00088 Barrier(); 00089 ~Barrier(); 00090 00091 #if defined ITK_USE_FETCHOP_BARRIERS 00092 static bool m_ReservoirInitialized; 00093 static atomic_reservoir_t m_Reservoir; 00094 static int m_MaxBarriers; 00095 atomic_var_t *m_Pvar; 00096 00097 char pad1[128]; // Attempt to put 00098 volatile int m_FetchopFlag; // m_Fetchop on its 00099 char pad2[128]; // own cache line. 00100 00101 #elif defined ITK_USE_SPROC 00102 barrier_t *m_Barrier; 00103 00104 #else 00105 ConditionVariable::Pointer m_ConditionVariable; 00106 unsigned int m_NumberArrived; 00107 SimpleMutexLock m_Mutex; 00108 00109 #endif 00110 00111 unsigned int m_NumberExpected; 00112 }; 00113 00114 } // end namespace itk 00115 00116 #endif

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