o
    Td                     @   s   d Z ddlZddlZddlZddlmZ ddlmZ ddlm	Z	m
Z
 ddlmZ ejdkr2dZd	Znejd
kr<dZdZndZdZdd Zdd ZdddZdd Zdd ZdddZd ddZdS )!a2  Cudatoolkit libraries lookup utilities.

Cudatoolkit libraries can be available via either:

- the `cudatoolkit` conda package,
- a user supplied location from CUDA_HOME,
- a system wide location,
- package-specific locations (e.g. the Debian NVIDIA packages),
- or can be discovered by the system loader.
    N)find_lib)get_cuda_paths)locate_driver_and_loaderload_driver)CudaSupportErrorwin32z%s.dllz%s.libdarwinzlib%s.dylibzlib%s.azlib%s.soc                  C   s   t  } | d j}|S )N	libdevice)r   info)dpaths r   j/home/ncw/WWW/www-new/content/articles/pi-bbp/venv/lib/python3.10/site-packages/numba/cuda/cudadrv/libs.pyget_libdevice!   s   
r   c                  C   s8   t t d} |  W  d    S 1 sw   Y  d S )Nrb)openr   read)bcfiler   r   r   open_libdevice'   s   $r   Fc                 C   sd   | dkrt  d jptd S |rdnd}t  | j}t| |||d}|r&tnt}|r.t|S ||  S )a  
    Find the path of a CUDA library based on a search of known locations. If
    the search fails, return a generic filename for the library (e.g.
    'libnvvm.so' for 'nvvm') so that we may attempt to load it using the system
    loader's search mechanism.
    nvvmstatic_cudalib_dircudalib_dir)platformstatic)r   r
   _dllnamepatternr   _staticnamepatternmax)libr   r   dir_typelibdir
candidatesnamepatternr   r   r   get_cudalib,   s   r"   c                 C   s   t | }t|S )N)r"   ctypesCDLLr   pathr   r   r   open_cudalib>   s   
r'   c                 C   s*   t | dd}tj|st| dd S )NTr   z
 not found)r"   osr&   isfileFileNotFoundErrorr%   r   r   r   check_static_libC   s   r,   c                 C   s@   | dkr
t  d jS | dkrt  d jS |rdnd}t  | jS )Nr   r	   r   r   )r   by)r   r   r   r   r   r   _get_source_variableI   s   r.   Tc                 C   s4  d}z/t  \}}d|}td| d td|  tddd t||\}}td|  W n tyL } ztd	|  d
}W Y d}~nd}~ww d }	|	D ]V}
t|
| }td|
t|
 |rltd| n	tdt	j
| | dtjfv rztddd t|
 td W qS ty } ztd|
|f  d
}W Y d}~qSd}~ww qSd}
t|
| d
d}td|
t|
d
d |rtd| n	tdt	j
| zt|
 W n ty } ztd|
|f  d
}W Y d}~nd}~ww td}td|  tddd t }|rtd | S td d
}| S )z:Test library lookup.  Path info is printed to stdout.
    Fz, z Finding driver from candidates: z...zUsing loader z	trying to load driver)endz	ok, loaded from z	ERROR: failed to open driver: TNznvvm cudartzFinding {} from {}z	located atz	named z	trying to open libraryz	okz	ERROR: failed to open %s:
%s	cudadevrtr(   z	ERROR: failed to find %s:
%sr	   zFinding libdevice from z	ERROR: can't open libdevice)r   joinprintr   r   splitr"   formatr.   r)   r&   basenamesysr   r'   OSErrorr,   r+   r   )	_platformprint_pathsfaileddlloaderr    	locationsdllr&   elibsr   wherer   r   r   testS   sr   




rA   )NF)F)NT)__doc__r)   r6   r#   numba.misc.findlibr   numba.cuda.cuda_pathsr   numba.cuda.cudadrv.driverr   r   numba.cuda.cudadrv.errorr   r   r   r   r   r   r"   r'   r,   r.   rA   r   r   r   r   <module>   s.    




