o
    <&ieW                     @   sJ  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 Zdd Zdd Zd d! Zd"d# Zd4d$d%Z d&d' Z!d(d) Z"d*d+ Z#d,d- Z$d.d/ Z%d0d1 Z&d2d3 Z'dS )5    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)Z	_weak_refr   torchStorager   )selfstorage r   KC:\wamp64\www\opt\env\Lib\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   Z_expiredr   r   r   r   r   expired-      zStorageWeakRef.expiredc                 C   s   |  | j d S r	   )r   r   r   r   r   r   __del__0      zStorageWeakRef.__del__c                 C   s   | j S r	   )r   r   r   r   r   __hash__3      zStorageWeakRef.__hash__c                 C   s    t | t |kr
dS | j|jkS )NT)idr   )r   otherr   r   r   __eq__6   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 )SharedCachez:Dictionary from multiprocessing handles to StorageWeakRef.c                 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(   I   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-   L   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   r.   storage_refr   r   r   r/   P   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   liver.   r2   r   r   r   r1   V   s   
z SharedCache.free_dead_referencesN)	r   r    r!   r"   r   r(   r-   r/   r1   r   r   r   r   r%   <   s    
r%   c                 C   s   t jj| |S r	   )r
   cudaEventZfrom_ipc_handle)devicehandler   r   r   rebuild_eventd   r   r=   c                 C   s   |   }t| j|ffS r	   )Z
ipc_handler=   r;   )eventr<   r   r   r   reduce_eventh   s   r?   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	ParameterrA   )r   r   metadatastorage_offsetsizestriderA   tr   r   r   rebuild_tensorm   s   rL   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_storagerM   rN   r@   )storage_from_cacher
   r9   Z
_lazy_initZ_new_shared_cudar   shared_cacheZ_release_ipc_counter
isinstanceUntypedStorage_untyped_storagerB   rC   r   TypedStoragerD   rE   rF   rA   )Z
tensor_clsZtensor_sizeZtensor_stridetensor_offsetZstorage_clsrM   Zstorage_deviceZstorage_handlestorage_size_bytesstorage_offset_bytesrA   ref_counter_handleref_counter_offsetevent_handleevent_sync_requiredr   Z_storagerK   r   r   r   rebuild_cuda_tensorz   sL   


r^   c                 C   s  | j r
| js
tdt|  tjj|  ddlm	} | j
r't| |s't| S | jtjtjtjtjtjhv r:t| S |  }|jjjdkrx| \}}}}}}}	}
|  }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   )NestedTensorr9   )!rA   Zis_leafRuntimeErrorr   r
   utilshooksZwarn_if_has_hooksZ$torch.nested._internal.nested_tensorr_   Z	is_nestedrS   reduce_nested_tensorlayout
sparse_coo
sparse_csr
sparse_bsr
sparse_csc
sparse_bscreduce_sparse_tensorZ_typed_storagerU   r;   typeZ_share_cuda_rH   r   rR   r^   rI   rJ   rM   rL   )Ztensorr_   r   r;   r<   rX   rY   rZ   r[   r\   r]   rW   rG   r   r   r   reduce_tensor   sn   _
rl   c                 C   s0   | | }|| }	|| }
|| }t ||	|
|S r	   )r
   Z_nested_view_from_buffer_copy)rebuild_buffer_funcrebuild_buffer_argsrebuild_sizes_funcrebuild_sizes_argsrebuild_strides_funcrebuild_strides_argsrebuild_offsets_funcrebuild_offsets_argsbuffersizesstridesoffsetsr   r   r   rebuild_nested_tensore  s
   
ry   c           	   	   C   sX   t |  \}}t |  \}}t |  \}}t |  \}}t||||||||ffS r	   )rl   valuesZ_nested_tensor_sizeZ_nested_tensor_stridesZ_nested_tensor_storage_offsetsry   )	ntrm   rn   ro   rp   rq   rr   rs   rt   r   r   r   rc   v  s&   rc   c                 C   s"   | | }|| }t j||||dS )N)is_coalesced)r
   Zsparse_coo_tensor)rebuild_indices_funcrebuild_indices_argsrebuild_values_funcrebuild_values_argsshaper|   indicesrz   r   r   r   rebuild_sparse_coo_tensor  s   r   c                 C   s,   | | }|| }	|| }
t j||	|
||dS )N)rd   )r
   Zsparse_compressed_tensor)rebuild_compressed_indices_funcrebuild_compressed_indices_argsrebuild_plain_indices_funcrebuild_plain_indices_argsr   r   r   rd   compressed_indicesplain_indicesrz   r   r   r    rebuild_sparse_compressed_tensor  s   

r   c              	   C   s   | j tju r#t|  \}}t|  \}}t||||| j|  ffS | j tj	tj
hv r5|  }|  }n| j tjtjhv rG|  }|  }nt| j t|\}}t|\}	}
t|  \}}t|||	|
||| j| j ffS r	   )rd   r
   re   rl   Z_indicesZ_valuesr   r   r|   rf   rg   Zcrow_indicesZcol_indicesrh   ri   Zccol_indicesZrow_indicesNotImplementedErrorrz   r   )sparser}   r~   r   r   r   r   r   r   r   r   r   r   r   rj     sL   


rj   c                 C   s   t | }|j|jfS r	   )osfstatst_inost_dev)fdstatr   r   r   fd_id  s   
r   c                 C   s$   t |}|d u rd S tj|jS r	   )rR   r-   r
   rT   Z_new_with_weak_ptrr   )r   r.   r2   r   r   r   rQ     s   
rQ   c              	   C   sh   |  }z)t| t|}|d ur|W t| S | ||}t|tt|< |W t| S t| w r	   )detachrQ   r   r   closeZ_new_shared_fd_cpur   rR   )r   dfrI   r   r   r   r   r   rebuild_storage_fd  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 NTrO   )
rQ   Z_shared_decrefr
   rT   Z_new_shared_filename_cpurB   Z_element_sizerV   r   rR   )r   managerr<   rI   rM   r   Z	byte_sizeZuntyped_storager   r   r   rebuild_storage_filename  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   rV   )r   rM   r   r   r   rebuild_typed_storage     r   c                 C   s   t | j| jffS r	   )r   rU   rM   r   r   r   r   reduce_typed_storage  r   r   c                 C   s   || ddS )NT)rP   rN   r   )r   Zstorage_typer   r   r   rebuild_typed_storage_child  s   r   c                 C   s   t | jt| ffS r	   )r   rU   rk   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 )Nr3   )get_sharing_strategyz>Cannot pickle CUDA storage; try pickling a CUDA tensor insteadZfile_systemr   ) r   Zis_cudar`   Z_share_filename_cpu_r   rS   r
   rV   rM   Z_shared_increfrI   r   rk   Z_share_fd_cpu_multiprocessingZ	reductionZDupFdr   r   r   rR   )r   r   rG   	cache_keyZrebuildr   rI   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 )NrT   )r   registerr
   r9   r:   r?   Z_storage_classesr   r   r   r   rV   r   Z_tensor_classesrl   ZTensorrD   rE   rF   )rK   r   r   r   init_reductionsB  s   


r   r	   )(r   r   r)   Zmultiprocessing.reductionr   Zmultiprocessing.utilr   typingr   r
   Ztorch.utils.hooksZtorch._namedtensor_internalsr   Zmultiprocessing.resource_sharerImportErrorr   r,   r%   rR   r=   r?   rL   r^   rl   ry   rc   r   r   rj   r   rQ   r   r   r   r   r   r   r   r   r   r   r   r   r   <module>   sN    %%D (/
