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virtual P6R::P6ERR P6R::p6ICircbuf::inUse ( P6SIZE *  pcInUse)
pure virtual

This method is used to determine the number of bytes that are currently used in the buffer.

Parameters
pcInUse[ out ] A pointer to a P6R::P6UINT32 in which will be placed the number of bytes currently used in the buffer.
Returns
SuccessP6R::eOk 
FailureP6R::eInvalidArgpcInUse was NULL.