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vtkMutexLock.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkMutexLock.h,v $
00005   Language:  C++
00006 
00007   Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen 
00008   All rights reserved.
00009   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
00010 
00011      This software is distributed WITHOUT ANY WARRANTY; without even 
00012      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
00013      PURPOSE.  See the above copyright notice for more information.
00014 
00015 =========================================================================*/
00027 #ifndef __vtkMutexVariable_h
00028 #define __vtkMutexVariable_h
00029 
00030 
00031 #include "vtkObject.h"
00032 
00033 //BTX
00034 
00035 #ifdef VTK_USE_SPROC
00036 #include <abi_mutex.h> // Needed for SPROC implementation of mutex
00037 typedef abilock_t vtkMutexType;
00038 #endif
00039 
00040 #if defined(VTK_USE_PTHREADS) || defined(VTK_HP_PTHREADS)
00041 #include <pthread.h> // Needed for PTHREAD implementation of mutex
00042 typedef pthread_mutex_t vtkMutexType;
00043 #endif
00044  
00045 #ifdef VTK_USE_WIN32_THREADS
00046 #include <winbase.h> // Needed for WIN32 implementation of mutex
00047 typedef HANDLE vtkMutexType;
00048 #endif
00049 
00050 #ifndef VTK_USE_SPROC
00051 #ifndef VTK_USE_PTHREADS
00052 #ifndef VTK_USE_WIN32_THREADS
00053 typedef int vtkMutexType;
00054 #endif
00055 #endif
00056 #endif
00057 
00058 // Mutex lock that is not a vtkObject.
00059 class VTK_COMMON_EXPORT vtkSimpleMutexLock
00060 {
00061 public:
00062   // left public purposely
00063   vtkSimpleMutexLock();
00064   virtual ~vtkSimpleMutexLock();
00065 
00066   static vtkSimpleMutexLock *New();
00067 
00068   virtual const char *GetClassName() {return "vtkSimpleMutexLock";};
00069   virtual int IsA(const char *name);
00070   static vtkSimpleMutexLock *SafeDownCast(vtkSimpleMutexLock *o);
00071 
00072   void Delete() {delete this;}
00073   
00075   void Lock( void );
00076 
00078   void Unlock( void );
00079 
00080 protected:
00081   vtkMutexType   MutexLock;
00082 };
00083 
00084 //ETX
00085 
00086 class VTK_COMMON_EXPORT vtkMutexLock : public vtkObject
00087 {
00088 public:
00089   static vtkMutexLock *New();
00090 
00091   vtkTypeRevisionMacro(vtkMutexLock,vtkObject);
00092   void PrintSelf(ostream& os, vtkIndent indent);
00093   
00095   void Lock( void );
00096 
00098   void Unlock( void );
00099 
00100 protected:
00101   vtkSimpleMutexLock   SimpleMutexLock;
00102   vtkMutexLock() {};
00103 private:
00104   vtkMutexLock(const vtkMutexLock&);  // Not implemented.
00105   void operator=(const vtkMutexLock&);  // Not implemented.
00106 };
00107 
00108 
00109 inline void vtkMutexLock::Lock( void )
00110 {
00111   this->SimpleMutexLock.Lock();
00112 }
00113 
00114 inline void vtkMutexLock::Unlock( void )
00115 {
00116   this->SimpleMutexLock.Unlock();
00117 }
00118 
00119 #endif