LCDLock.h

#ifndef _LCD_LOCK_H_
#define _LCD_LOCK_H_

#include "LCDMutex.h"

#include <unistd.h>
#include <pthread.h>

class LCDLock
{
 private:
  LCDMutex *_lcdMutex;
  ::pthread_mutex_t *_posixMutex;
  bool _useLCD;

 public:    
  LCDLock(LCDMutex *mutex)
  {
    _lcdMutex = mutex;
    ::pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, 0);
    _lcdMutex->lock();
    _useLCD = true;
  }
  LCDLock(::pthread_mutex_t *mutex)
  {
    _posixMutex = mutex;
    ::pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, 0);
    ::pthread_mutex_lock(_posixMutex);
    _useLCD = false;
  }

  ~LCDLock()
  {
    if (_useLCD)
    {
      _lcdMutex->unlock();
    }
    else
    {
      ::pthread_mutex_unlock(_posixMutex);
    }
    ::pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, 0);
  }
};

#endif

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