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 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
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 *   except in compliance with the License. You may obtain a copy of
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#ifndef INCLUDED_FRAMEWORK_INC_THREADHELP_IGATE_H
#define INCLUDED_FRAMEWORK_INC_THREADHELP_IGATE_H

#include <osl/time.h>

namespace framework{

/*-************************************************************************************************************
    @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 bool wait    ( const TimeValue* pTimeOut = NULL  ) = 0;

    protected:
        ~IGate() {}
};      //  class IGate

}       //  namespace framework

#endif // INCLUDED_FRAMEWORK_INC_THREADHELP_IGATE_H

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