vtkThreadMessager.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkThreadMessager.h
 
  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
 
     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.
 
=========================================================================*/
#ifndef vtkThreadMessager_h
#define vtkThreadMessager_h
 
#include "vtkCommonSystemModule.h" // For export macro
#include "vtkObject.h"
 
#if defined(VTK_USE_PTHREADS) || defined(VTK_HP_PTHREADS)
#include <pthread.h> // Needed for pthread types
#endif
 
class VTKCOMMONSYSTEM_EXPORT vtkThreadMessager : public vtkObject
{
public:
  static vtkThreadMessager *New();
 
  vtkTypeMacro(vtkThreadMessager,vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);
 
  void WaitForMessage();
 
  void SendWakeMessage();
 
  void EnableWaitForReceiver();
 
  void DisableWaitForReceiver();
 
  void WaitForReceiver();
 
protected:
  vtkThreadMessager();
  ~vtkThreadMessager();
 
#ifdef VTK_USE_PTHREADS
  pthread_mutex_t Mutex;
  pthread_cond_t PSignal;
#endif
 
#ifdef VTK_USE_WIN32_THREADS
  vtkWindowsHANDLE WSignal;
#endif
 
private:
  vtkThreadMessager(const vtkThreadMessager&);  // Not implemented.
  void operator=(const vtkThreadMessager&);  // Not implemented.
};
 
#endif