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125 lines
2.8 KiB
C
125 lines
2.8 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkMutexLock.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkMutexLock
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* @brief mutual exclusion locking class
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*
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* vtkMutexLock allows the locking of variables which are accessed
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* through different threads. This header file also defines
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* vtkSimpleMutexLock which is not a subclass of vtkObject.
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*/
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#ifndef vtkMutexLock_h
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#define vtkMutexLock_h
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#include "vtkCommonCoreModule.h" // For export macro
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#include "vtkObject.h"
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#ifdef VTK_USE_SPROC
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#include <abi_mutex.h> // Needed for SPROC implementation of mutex
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typedef abilock_t vtkMutexType;
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#endif
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#if defined(VTK_USE_PTHREADS) || defined(VTK_HP_PTHREADS)
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#include <pthread.h> // Needed for PTHREAD implementation of mutex
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typedef pthread_mutex_t vtkMutexType;
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#endif
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#ifdef VTK_USE_WIN32_THREADS
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typedef vtkWindowsHANDLE vtkMutexType;
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#endif
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#ifndef VTK_USE_SPROC
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#ifndef VTK_USE_PTHREADS
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#ifndef VTK_USE_WIN32_THREADS
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typedef int vtkMutexType;
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#endif
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#endif
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#endif
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// Mutex lock that is not a vtkObject.
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class VTKCOMMONCORE_EXPORT vtkSimpleMutexLock
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{
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public:
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// left public purposely
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vtkSimpleMutexLock();
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virtual ~vtkSimpleMutexLock();
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static vtkSimpleMutexLock *New();
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void Delete() {delete this;}
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/**
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* Lock the vtkMutexLock
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*/
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void Lock( void );
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/**
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* Unlock the vtkMutexLock
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*/
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void Unlock( void );
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protected:
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friend class vtkSimpleConditionVariable;
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vtkMutexType MutexLock;
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private:
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vtkSimpleMutexLock(const vtkSimpleMutexLock& other) VTK_DELETE_FUNCTION;
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vtkSimpleMutexLock& operator=(const vtkSimpleMutexLock& rhs) VTK_DELETE_FUNCTION;
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};
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class VTKCOMMONCORE_EXPORT vtkMutexLock : public vtkObject
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{
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public:
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static vtkMutexLock *New();
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vtkTypeMacro(vtkMutexLock,vtkObject);
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void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;
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/**
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* Lock the vtkMutexLock
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*/
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void Lock( void );
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/**
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* Unlock the vtkMutexLock
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*/
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void Unlock( void );
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protected:
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friend class vtkConditionVariable; // needs to get at SimpleMutexLock.
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vtkSimpleMutexLock SimpleMutexLock;
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vtkMutexLock() {}
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private:
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vtkMutexLock(const vtkMutexLock&) VTK_DELETE_FUNCTION;
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void operator=(const vtkMutexLock&) VTK_DELETE_FUNCTION;
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};
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inline void vtkMutexLock::Lock( void )
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{
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this->SimpleMutexLock.Lock();
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}
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inline void vtkMutexLock::Unlock( void )
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{
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this->SimpleMutexLock.Unlock();
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}
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#endif
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