o
    hOC                     @   s"  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 d dl	Z	d dl
Z	d dlmZ zd dlZ W n	 ey;   Y nw G dd dZG dd	 d	eZe Zd
d Zdd Zdd Zdd Zdd Zdd Zdd Zdd Zd*ddZdd Zdd Zd d! Zd"d# Zd$d% Z d&d' Z!d(d) Z"dS )+    N)ForkingPickler)register_after_fork)Union)check_serializing_named_tensorc                   @   sL   e Zd ZdZddgZdd Zedd Zdd	 Zd
d Z	dd Z
dd ZdS )StorageWeakRefzA weak reference to a Storage.

    The cdata member is a Python number containing the integer representation of
    the Storage pointer.cdata_free_weak_refc                 C   s   |  | _tjj| _d S N)	_weak_refr   torchStorager   )selfstorage r   V/var/www/html/ai/venv/lib/python3.10/site-packages/torch/multiprocessing/reductions.py__init__   s   
zStorageWeakRef.__init__c                 C   s   |  | }||_tjj|_|S r	   )__new__r   r   r   r   )clsr   instancer   r   r   from_weakref%   s   

zStorageWeakRef.from_weakrefc                 C   s   t j| jS r	   )r   r   _expiredr   r   r   r   r   expired,      zStorageWeakRef.expiredc                 C   s   |  | j d S r	   )r   r   r   r   r   r   __del__/      zStorageWeakRef.__del__c                 C   s   | j S r	   )r   r   r   r   r   __hash__2      zStorageWeakRef.__hash__c                 C   s    t | t |kr
dS | j|jkS )NT)idr   )r   otherr   r   r   __eq__5   s   zStorageWeakRef.__eq__N)__name__
__module____qualname____doc__	__slots__r   classmethodr   r   r   r   r    r   r   r   r   r      s    
r   c                   @   s8   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d ZdS )SharedCachez9dictionary from multiprocessing handles to StorageWeakRefc                 C   s   d| _ |   t| tj d S )N   )limit_after_forkr   r'   r   r   r   r   r   >   s   zSharedCache.__init__c                 C   s   t  | _d S r	   )	threadingLocklockr   r   r   r   r*   H   r   zSharedCache._after_forkc                 C   s6   | j  t| |W  d    S 1 sw   Y  d S r	   )r-   dictget)r   keyr   r   r   r/   K   s   
$zSharedCache.getc                 C   s`   | j # t| || t| | jkr|   W d    d S W d    d S 1 s)w   Y  d S r	   )r-   r.   __setitem__lenr)   free_dead_references)r   r0   storage_refr   r   r   r1   O   s   
"zSharedCache.__setitem__c                 C   sF   d}t |  D ]\}}| r| |= q|d7 }qtd|d | _d S )Nr      r(      )listitemsr   maxr)   )r   liver0   r4   r   r   r   r3   U   s   
z SharedCache.free_dead_referencesN)	r!   r"   r#   r$   r   r*   r/   r1   r3   r   r   r   r   r'   ;   s    
r'   c                 C   s   t jj| |S r	   )r   cudaEventfrom_ipc_handle)devicehandler   r   r   rebuild_eventc   r   r@   c                 C   s   |   }t| j|ffS r	   )
ipc_handler@   r>   )eventr?   r   r   r   reduce_eventg   s   rC   c                 C   sL   |\}}}}t j||||}| t jjjkr!t jjj||d}|S ||_|S )Nrequires_grad)r   _utils_rebuild_tensornn	parameter	ParameterrE   )r   r   metadatastorage_offsetsizestriderE   tr   r   r   rebuild_tensorl   s   rP   c              
   C   s   |d u s|dkr|d||dd}n-t |||	f}|d u r6tj  |||||	||||}t|t||	f< n|j|||d t|tj	rF|n|j
}tjtjj||dd|||}| tjjjkrktjjj||
d}|S |
|_|S )Nr   T)dtyper>   	_internal)r>   wrap_storagerQ   rR   rD   )storage_from_cacher   r;   
_lazy_init_new_shared_cudar   shared_cache_release_ipc_counter
isinstanceUntypedStorage_untyped_storagerF   rG   r   TypedStoragerH   rI   rJ   rE   )
tensor_clstensor_sizetensor_stridetensor_offsetstorage_clsrQ   storage_devicestorage_handlestorage_size_bytesstorage_offset_bytesrE   ref_counter_handleref_counter_offsetevent_handleevent_sync_requiredr   _storagerO   r   r   r   rebuild_cuda_tensory   sL   


rl   c                 C   s   |   }| jr| jstdt|  tjj|  |j	j
jdkrS| \}}}}}}}}	|  }
t|t|< tt| |  |  |
t|| j||||| j||||	ffS |  |  |  | jf}tt| ||ffS )NzCowardly refusing to serialize non-leaf tensor which requires_grad, since autograd does not support crossing process boundaries.  If you just want to transfer the data, call detach() on the tensor before serializing (e.g., putting it on the queue).r;   )_typed_storagerE   is_leafRuntimeErrorr   r   utilshookswarn_if_has_hooksr\   r>   type_share_cuda_rL   r   rX   rl   rM   rN   rQ   rP   )tensorr   r>   r?   re   rf   rg   rh   ri   rj   ra   rK   r   r   r   reduce_tensor   sX   \
rv   c                 C   s   t | }|j|jfS r	   )osfstatst_inost_dev)fdstatr   r   r   fd_idS  s   
r}   c                 C   s$   t |}|d u rd S tj|jS r	   )rX   r/   r   r[   _new_with_weak_ptrr   )r   r0   r4   r   r   r   rU   [  s   
rU   c              	   C   sh   |  }z)t| t|}|d ur|W t| S | ||}t|tt|< |W t| S t| w r	   )detachrU   r}   rw   close_new_shared_fd_cpur   rX   )r   dfrM   r{   r   r   r   r   rebuild_storage_fdb  s   r   c                 C   sx   t | |}|d ur| S |d u rtj|||}n|tj| }tj|||}tj||dd}t|t	|< | S NTrS   )
rU   _shared_decrefr   r[   _new_shared_filename_cpurF   _element_sizer]   r   rX   )r   managerr?   rM   rQ   r   	byte_sizeuntyped_storager   r   r   rebuild_storage_filenameo  s   r   c                 C   s   |  S r	   r   )r   r   r   r   rebuild_storage_empty  r   r   c                 C   s   t jj| |ddS r   )r   r   r]   )r   rQ   r   r   r   rebuild_typed_storage     r   c                 C   s   t | j| jffS r	   )r   r\   rQ   r   r   r   r   reduce_typed_storage  r   r   c                 C   s   || ddS )NT)rT   rR   r   )r   storage_typer   r   r   rebuild_typed_storage_child  s   r   c                 C   s   t | jt| ffS r	   )r   r\   rs   r   r   r   r   reduce_typed_storage_child  r   r   c                 C   s   ddl m} | jrtd| dkr-|  }|d }t}t| tjr(|| j	f7 }| 
  n#|  dkr:tt| ffS |  \}}tj|}t|}||f}t}t| t|< |t| f| fS )Nr5   )get_sharing_strategyz>Cannot pickle CUDA storage; try pickling a CUDA tensor insteadfile_systemr   ) r   is_cudaro   _share_filename_cpu_r   rZ   r   r]   rQ   _shared_increfrM   r   rs   _share_fd_cpu_multiprocessing	reductionDupFdr}   r   r   rX   )r   r   rK   	cache_keyrebuildr{   rM   r   r   r   r   reduce_storage  s*   

r   c                  C   s   t tjjt tjD ]} | jdkrt | t qt | t	 qt tj
jt tjD ]} t | t q+t tjt t tjjjt d S )Nr[   )r   registerr   r;   r<   rC   _storage_classesr!   r   r   r   r]   r   _tensor_classesrv   TensorrH   rI   rJ   )rO   r   r   r   init_reductions  s   


r   r	   )#r   rw   r+   multiprocessing.reductionr   multiprocessing.utilr   typingr   r   torch.utils.hookstorch._namedtensor_internalsr   multiprocessing.resource_sharerImportErrorr   r.   r'   rX   r@   rC   rP   rl   rv   r}   rU   r   r   r   r   r   r   r   r   r   r   r   r   r   <module>   sD    $%D 
