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/*=========================================================================
Program: Visualization Toolkit
Module: vtkThreadMessager.cxx
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.
=========================================================================*/
// Hide VTK_DEPRECATED_IN_9_1_0() warnings for this class.
#define VTK_DEPRECATION_LEVEL 0
#include "vtkThreadMessager.h"
#include "vtkObjectFactory.h"
#ifdef VTK_USE_WIN32_THREADS
#include "vtkWindows.h"
#endif
vtkStandardNewMacro(vtkThreadMessager);
vtkThreadMessager::vtkThreadMessager()
{
#ifdef VTK_USE_WIN32_THREADS
this->WSignal = CreateEvent(0, FALSE, FALSE, 0);
#elif defined(VTK_USE_PTHREADS)
pthread_cond_init(&this->PSignal, nullptr);
pthread_mutex_init(&this->Mutex, nullptr);
pthread_mutex_lock(&this->Mutex);
#endif
}
vtkThreadMessager::~vtkThreadMessager()
{
#ifdef VTK_USE_WIN32_THREADS
CloseHandle(this->WSignal);
#elif defined(VTK_USE_PTHREADS)
pthread_mutex_unlock(&this->Mutex);
pthread_mutex_destroy(&this->Mutex);
pthread_cond_destroy(&this->PSignal);
#endif
}
void vtkThreadMessager::WaitForMessage()
{
#ifdef VTK_USE_WIN32_THREADS
WaitForSingleObject(this->WSignal, INFINITE);
#elif defined(VTK_USE_PTHREADS)
pthread_cond_wait(&this->PSignal, &this->Mutex);
#endif
}
//------------------------------------------------------------------------------
void vtkThreadMessager::SendWakeMessage()
{
#ifdef VTK_USE_WIN32_THREADS
SetEvent(this->WSignal);
#elif defined(VTK_USE_PTHREADS)
pthread_cond_broadcast(&this->PSignal);
#endif
}
void vtkThreadMessager::EnableWaitForReceiver()
{
#if defined(VTK_USE_PTHREADS)
pthread_mutex_lock(&this->Mutex);
#endif
}
void vtkThreadMessager::WaitForReceiver()
{
#if defined(VTK_USE_PTHREADS)
pthread_mutex_lock(&this->Mutex);
#endif
}
void vtkThreadMessager::DisableWaitForReceiver()
{
#if defined(VTK_USE_PTHREADS)
pthread_mutex_unlock(&this->Mutex);
#endif
}
void vtkThreadMessager::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
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