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#ifndef __FRAMEWORK_THREADHELP_IGATE_H_
#define __FRAMEWORK_THREADHELP_IGATE_H_

//_________________________________________________________________________________________________________________
//  includes
//_________________________________________________________________________________________________________________

#include <osl/time.h>

//_________________________________________________________________________________________________________________
//  namespace
//_________________________________________________________________________________________________________________

namespace framework{

//_________________________________________________________________________________________________________________
//  declarations
//_________________________________________________________________________________________________________________

/*-************************************************************************************************************//**
    @descr          We need this interface to support using of different gate implementations in a generic way.
*//*-*************************************************************************************************************/
class IGate
{
    //-------------------------------------------------------------------------------------------------------------
    //  public methods
    //-------------------------------------------------------------------------------------------------------------
    public:

        /*-****************************************************************************************************//**
            @descr      These functions must be supported by a derived class!
                            open()      -open access for all waiting threads
                            close()     -close access for all further coming threads
                            openGap()   -open access for current waiting threads only
                            wait()      -must be called to pass the gate
        *//*-*****************************************************************************************************/
        virtual void     open    (                                   ) = 0;
        virtual void     close   (                                   ) = 0;
        virtual void     openGap (                                   ) = 0;
        virtual sal_Bool wait    ( const TimeValue* pTimeOut = NULL  ) = 0;

};      //  class IGate

}       //  namespace framework

#endif  //  #ifndef __FRAMEWORK_THREADHELP_IGATE_H_

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