def __new__(cls):
        with _nvvm_lock:
            if cls.__INSTANCE is None:
                cls.__INSTANCE = inst = object.__new__(cls)
                try:
                    inst.driver = open_cudalib('nvvm', ccc=True)
                except __HOLE__ as e:
                    cls.__INSTANCE = None
                    errmsg = ("libNVVM cannot be found. Do `conda install "
                              "cudatoolkit`:\n%s")
                    raise NvvmSupportError(errmsg % e)

                # Find & populate functions
                for name, proto in inst._PROTOTYPES.items():
                    func = getattr(inst.driver, name)
                    func.restype = proto[0]
                    func.argtypes = proto[1:]
                    setattr(inst, name, func)

        return cls.__INSTANCE
dataset/ETHPy150Open numba/numba/numba/cuda/cudadrv/nvvm.py/NVVM.__new__