00001 /*========================================================================= 00002 00003 Program: Visualization Toolkit 00004 Module: vtkMutexLock.h 00005 00006 Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen 00007 All rights reserved. 00008 See Copyright.txt or http://www.kitware.com/Copyright.htm for details. 00009 00010 This software is distributed WITHOUT ANY WARRANTY; without even 00011 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 00012 PURPOSE. See the above copyright notice for more information. 00013 00014 =========================================================================*/ 00026 #ifndef __vtkMutexLock_h 00027 #define __vtkMutexLock_h 00028 00029 00030 #include "vtkObject.h" 00031 00032 //BTX 00033 00034 #ifdef VTK_USE_SPROC 00035 #include <abi_mutex.h> // Needed for SPROC implementation of mutex 00036 typedef abilock_t vtkMutexType; 00037 #endif 00038 00039 #if defined(VTK_USE_PTHREADS) || defined(VTK_HP_PTHREADS) 00040 #include <pthread.h> // Needed for PTHREAD implementation of mutex 00041 typedef pthread_mutex_t vtkMutexType; 00042 #endif 00043 00044 #ifdef VTK_USE_WIN32_THREADS 00045 typedef vtkWindowsHANDLE vtkMutexType; 00046 #endif 00047 00048 #ifndef VTK_USE_SPROC 00049 #ifndef VTK_USE_PTHREADS 00050 #ifndef VTK_USE_WIN32_THREADS 00051 typedef int vtkMutexType; 00052 #endif 00053 #endif 00054 #endif 00055 00056 // Mutex lock that is not a vtkObject. 00057 class VTK_COMMON_EXPORT vtkSimpleMutexLock 00058 { 00059 public: 00060 // left public purposely 00061 vtkSimpleMutexLock(); 00062 virtual ~vtkSimpleMutexLock(); 00063 00064 static vtkSimpleMutexLock *New(); 00065 00066 void Delete() {delete this;} 00067 00069 void Lock( void ); 00070 00072 void Unlock( void ); 00073 00074 protected: 00075 friend class vtkSimpleConditionVariable; 00076 vtkMutexType MutexLock; 00077 }; 00078 00079 //ETX 00080 00081 class VTK_COMMON_EXPORT vtkMutexLock : public vtkObject 00082 { 00083 public: 00084 static vtkMutexLock *New(); 00085 00086 vtkTypeMacro(vtkMutexLock,vtkObject); 00087 void PrintSelf(ostream& os, vtkIndent indent); 00088 00090 void Lock( void ); 00091 00093 void Unlock( void ); 00094 00095 protected: 00096 //BTX 00097 friend class vtkConditionVariable; // needs to get at SimpleMutexLock. 00098 //ETX 00099 00100 vtkSimpleMutexLock SimpleMutexLock; 00101 vtkMutexLock() {}; 00102 private: 00103 vtkMutexLock(const vtkMutexLock&); // Not implemented. 00104 void operator=(const vtkMutexLock&); // Not implemented. 00105 }; 00106 00107 00108 inline void vtkMutexLock::Lock( void ) 00109 { 00110 this->SimpleMutexLock.Lock(); 00111 } 00112 00113 inline void vtkMutexLock::Unlock( void ) 00114 { 00115 this->SimpleMutexLock.Unlock(); 00116 } 00117 00118 #endif
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