vlThreadedObject.h

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/******************************************************************************
** Copyright (c) 1992-2025 MAK Technologies, Inc
** All rights reserved.
******************************************************************************/
#pragma once

#include "vlSmartPointers.h"
#include "vlThread.h"
#include "vlRunnable.h"
#include "vlExceptions.h"
#include "vlMachineTypes.h"

#ifdef DtUSE_UTILITIES_NAMESPACE
namespace DtUSE_UTILITIES_NAMESPACE
{
#endif



typedef std::shared_ptr<DtRunnable> DtRunnableSP;

#define typedefException(Name,Value) \
   const int Name##Number = Value;\
   typedef DtTemplatedException<Name##Number> Name;
const int ThreadExceptionBase = 1000;
typedefException(DtThreadAlreadyRunning,ThreadExceptionBase + 1)
typedefException(DtThreadNotStarted,    ThreadExceptionBase + 2)
typedefException(DtThreadCreationError, ThreadExceptionBase + 3)
typedefException(DtThreadWouldDeadlock, ThreadExceptionBase + 4)


class DT_DLL_VLUTIL DtThreadedObject
{
public:
   DtThreadedObject(); 

   DtThreadedObject(DtRunnableSP ptr); 

   virtual ~DtThreadedObject();

   void start();

   void join(); 

   void stop(bool block);

   bool running() const;

   void setRunnableObject(DtRunnableSP newObject);

   DtRunnableSP runnableObject() const;   

protected:

   DtThreadedObject(const DtThreadedObject&);
   DtThreadedObject& operator=(const DtThreadedObject&);

   void setRunning(bool value);

   bool                          myRunningFlag;
   DtRunnableSP                  myObject;
   DtThread*                     myThread;
   mutable DtMutex               myMutex;   
};



#ifdef DtUSE_UTILITIES_NAMESPACE
} 
#endif