Function makeExclusiveUse

extensions/include/cuMat/src/Matrix.h:759–769

* \brief Checks if the underlying data is used by an other matrix expression and if so, * copies the data so that this matrix is the exclusive user of that data. * * This method has no effect if \ref isExclusiveUse is already true. * * Postcondition: isExclusiveUse() == true */

    * Postcondition: <code>isExclusiveUse() == true</code>
    */
    void makeExclusiveUse()
    {
        if (isExclusiveUse()) return;

        DevicePointer<_Scalar> ptr = data_.dataPointer();
        data_ = Storage_t(rows(), cols(), batches());
        CUMAT_SAFE_CALL(cudaMemcpyAsync(data(), ptr.pointer(), sizeof(_Scalar)*rows()*cols()*batches(), cudaMemcpyDeviceToDevice, Context::current().stream()));
        CUMAT_PROFILING_INC(MemcpyDeviceToDevice);

        assert(isExclusiveUse());
    }

	// COPY CALLS