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 * $RCSfile: conditn.hxx,v $
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#ifndef _OSL_CONDITN_HXX_
#define _OSL_CONDITN_HXX_

#ifdef __cplusplus

#include <osl/time.h>

#include <osl/conditn.h>


namespace osl
{     

    class Condition
    {
    public:

        enum Result
        {
            result_ok      = osl_cond_result_ok,
            result_error   = osl_cond_result_error,
            result_timeout = osl_cond_result_timeout
        };

        /* Create a condition.
         */
        Condition()
        {
            condition = osl_createCondition();
        }

        /* Release the OS-structures and free condition data-structure.
         */
        ~Condition()
        {
            osl_destroyCondition(condition);
        }

        /* Release all waiting threads, check returns sal_True.
         */
        void set()
        {
            osl_setCondition(condition);
        }

        /* Reset condition to false: wait() will block, check() returns sal_False.
         */
        void reset() {
            osl_resetCondition(condition);
        }

        /** Blocks the calling thread until condition is set.
         */
        Result wait(const TimeValue *pTimeout = 0)
        {
            return (Result) osl_waitCondition(condition, pTimeout);
        }

        /** Checks if the condition is set without blocking.
         */
        sal_Bool check()
        {
            return osl_checkCondition(condition);
        }


    private:
        oslCondition condition;

        /** The underlying oslCondition has no reference count.
        
        Since the underlying oslCondition is not a reference counted object, copy
        constructed Condition may work on an already destructed oslCondition object.
        
        */
        Condition(const Condition&);
        
        /** The underlying oslCondition has no reference count.
        
        When destructed, the Condition object destroys the undelying oslCondition,
        which might cause severe problems in case it's a temporary object.
         
        */
        Condition(oslCondition condition);
        
        /** This assignment operator is private for the same reason as
            the copy constructor.
        */
        Condition& operator= (const Condition&);
        
        /** This assignment operator is private for the same reason as
            the constructor taking a oslCondition argument.
        */
        Condition& operator= (oslCondition);
    };

}

#endif  /* __cplusplus */
#endif	/* _OSL_CONDITN_HXX_ */