|
Server : Apache System : Linux iad1-shared-b8-43 6.6.49-grsec-jammy+ #10 SMP Thu Sep 12 23:23:08 UTC 2024 x86_64 User : dh_edsupp ( 6597262) PHP Version : 8.2.26 Disable Function : NONE Directory : /lib/python3/dist-packages/mercurial/__pycache__/ |
Upload File : |
o
�]Lb�= � @ sD d dl mZ d dlZd dlZd dlZd dlZd dlZd dlZz d dlZej W n e
y6 ddl m Z Y nw ddl
mZ ddlmZmZmZmZmZ dd� Zd d
� Zejrcd d � ZG d
d� de�Zndd � Zdd� Zejsqej rwdZ ej Z ndZ dZ d!dd�Z d"dd�Z dd� Z!dd � Z"d d � Z#ej r�e#Z$ne!Z$e"Z%d d � Z&dS )#� )�absolute_importN� )�
selectors2)�_)�encoding�error�pycompat�scmutil�utilc C st zt t�d��} | dkr| W S W n ttfy Y nw zt tjd �} | dkr+| W S W dS ttfy9 Y dS w )z-try to count the number of CPUs on the system�SC_NPROCESSORS_ONLNr s NUMBER_OF_PROCESSORSr )�int�os�sysconf�AttributeError�
ValueErrorr �environ�KeyError)�n� r �2/usr/lib/python3/dist-packages/mercurial/worker.py� countcpus" s$ �����r c C sZ | � dd�}|r$z
t|�}|dkr|W S W n ty# t�td���w ttt� d�d�S )N� workers numcpusr s! number of cpus must be an integer� � ) �configr r r �Abortr �min�maxr )�ui�sr r r r � _numworkers8 s � �r c C s t �� t �� kS �N)� threading�current_thread� main_threadr r r r � ismainthreadF s r% c @ s& e Zd Zdd� Zdd� Zd dd�ZdS )
�_blockingreaderc C s
|| _ d S r! )�_wrapped)�self�wrappedr r r �__init__J �
z_blockingreader.__init__c C s
| j �� S r! )r' �readline�r( r r r r, Q r+ z_blockingreader.readline���c C sl |dk r | j �� S t|�}t|�}d}||k r,| j �||d � �}|s$n||7 }||k s~||d �= t|�S �Nr )r' �readall� bytearray�
memoryview�readinto�bytes)r( �size�buf�view�pos�retr r r �readU s
�
z_blockingreader.readN)r. )�__name__�
__module__� __qualname__r* r, r: r r r r r& I s r& c C s t t�� tj�S r! )�
isinstancer" r# � _MainThreadr r r r r% j s c C s | S r! r )r) r r r r& o s g{�G�z�?gꌠ9Y>)FFTc C s8 |st rdS || }t| �}|t| || }|dkS )zetry to determine whether the benefit of multiple processes can
outweigh the cost of starting themFg333333�?)�_DISALLOW_THREAD_UNSAFEr �
_STARTUP_COST)r � costperop�nops�
threadsafe�linear�workers�benefitr r r �
worthwhile~ s rH c C sX | � dd�}|rttu rt� sd}|r%t| |t|�|d�r%t| ||||�S |||f � S )a0 run a function, possibly in parallel in multiple worker
processes.
returns a progress iterator
costperarg - cost of a single task
func - function to run. It is expected to return a progress iterator.
staticargs - arguments to pass to every invocation of the function
args - arguments to split into chunks, to pass to individual
workers
hasretval - when True, func and the current function return an progress
iterator then a dict (encoded as an iterator that yield many (False, ..)
then a (True, dict)). The dicts are joined in some arbitrary order, so
overlapping keys are a bad idea.
threadsafe - whether work items are thread safe and can be executed using
a thread-based worker. Should be disabled for CPU heavy tasks that don't
release the GIL.
r s enabledF)rD )�
configbool�_platformworker� _posixworkerr% rH �len)r �
costperarg�func�
staticargs�args� hasretvalrD �enabledr r r �worker� s rS c # s� � t | �}t�tj��t�tjtj� t� dg����fdd��d��fdd� � ��� fdd�}t�tj|��| �� t� � }g �i }t
|t |t |���D ]��t�
� \�� ���� f� d } zlz)t�� }
|
dkr�t�tj�� t�tj�� � ����
� fd
d �} t�| | �} W n t� � |kr�� t�� d } t| t� }
| j|
d � Y W t� � |kr�zz| �� W n Y W t�| d
@ � n6t�| d
@ � w n-t� � |kr�z z| �� W n
Y W t�| d
@ � w W t�| d
@ � w t�| d
@ � w w ��|
� qNt�� � �D ]\�� t�� � � � t� �dd�tj � �q���� � fdd�}zmt ��}|dk�r�� � � D ]X\}}z t j!�"t#|j$��}|�rR|d �rR|�%|d � n|V W �q4 t&�yq � �'|j$� |j$�� |d8 }Y �q4 t(�y� } z|j)t)j*k�r�W Y d }~�q4� d }~ww |dk�s0W n
�� |� � |� }|�r�|dk �r�t�+t� � | � t,�-|��|�r�d|fV d S d S )Nr c s` t � t j� � �D ]$} z t�| t j� W q ty- } z
|jtjkr#� W Y d }~q d }~ww d S r! )�signal�SIGCHLDr
�kill�SIGTERM�OSError�errno�ESRCH)�p�err)�oldchldhandler�pidsr r � killworkers� s ����z!_posixworker.<locals>.killworkersTc s� � � � D ]W}d }} zt�|| rdntj�\}}W n* tyD } z |jtjkr.W Y d }~q
|jtjkr?� �|� W Y d }~n� d }~ww |sHq� �|� t |�}|r[�d s[|�d< qd S r/ )
�copyr
�waitpid�WNOHANGrX rY �EINTR�ECHILD�discard� _exitstatus)�blocking�pidr[ �st�e)r^ �problemr r �waitforworkers� s.
��
��z$_posixworker.<locals>.waitforworkersc s �dd� �d r� � d S d S )NF)rg r r )�signum�frame)r_ rk rl r r �sigchldhandler� s
�z$_posixworker.<locals>.sigchldhandlerr. c s` �d d� D ]\} }t �| � t �|� qt ��� � ��f � D ] }t ��tj�|�� q!dS )Nr. r )r
�close�writer
�pickle�dumps)�r�w�result)rN �pargs�pipes�rfdrO �wfdr r �
workerfunc� s
z _posixworker.<locals>.workerfunc)�force� �rbc s2 t � t j�� �� t � t j� � ��� �d S r/ )rT �SIGINTrU rp r )r] �
oldhandlerrk �selectorrl r r �cleanup s
z _posixworker.<locals>.cleanupr �T).r rT � getsignalr �SIG_IGN�setrU �flushr
�getpid� partitionr rL �pipe�append�forkr � callcatch�sys�exc_info�
issubclass�KeyboardInterrupt� traceback�_exit�add� selectors�DefaultSelectorrp �register�fdopen�
EVENT_READ�selectr
rr �loadr& �fileobj�update�EOFError�
unregister�IOErrorrY rc rV r � WorkerError)r rN rO rP rQ rF ro � parentpid�retvalr9 rh r{ �exctyper| r� � openpipes�key�events�resrj �statusr )
rN r_ r] r� rw r^ rx rk ry r� rO rl rz r rK � s� �
� � � � � �
�
��
��
�rK c C s. t �| �r
t �| �S t �| �rt �| � S dS )z�convert a posix exit status into the same form returned by
os.spawnv
returns None if the process was stopped instead of exitingN)r
� WIFEXITED� WEXITSTATUS� WIFSIGNALED�WTERMSIG)�coder r r �_posixexitstatusA s
�r� c # s� � G dd� dt j�}g � � �fdd�}t��}tj�� }tj�� } i }
t||d �D ]} | �| � q*t|�D ]} || |||�}
� � |
� |
�
� q6zKt � �dkr�|� � sm|�
� }|rf|d rf|
�|d � n|V |� � rT� d �d� d d
� � D �}|D ]}
|
jd ur�|
j�� �|
� q}t � �dksPW n
ttfy� |� � w |� � s�|�
� }|r�|d r�|
�|d � n|V |� � r�|r�d |
fV d S d S ) Nc @ s$ e Zd Zdd� Zdd� Zdd� ZdS )z _windowsworker.<locals>.Workerc _ sH t jj| g|�R i |�� || _|| _|| _|| _d| _d| _d | _ d S )NFT)
r" �Threadr* �
_taskqueue� _resultqueue�_func� _staticargs� _interrupted�daemon� exception)r( � taskqueue� resultqueuerN rO rP �kwargsr r r r* N s
z'_windowsworker.<locals>.Worker.__init__c S s
d| _ d S )NT)r� r- r r r � interruptZ r+ z(_windowsworker.<locals>.Worker.interruptc
S s� z?| j �� s=z!| j �� }| j| j|f � D ]}| j�|� | jr% W W d S qW n
tj j
y4 Y W d S w | j �� rW d S W d S t yO } z|| _ � d }~ww r! )
r� �empty�
get_nowaitr� r� r� �putr� r �queue�Empty� Exceptionr� )r( rP r� rj r r r �run] s&
���� ��z"_windowsworker.<locals>.Worker.runN)r; r< r= r* r� r� r r r r �WorkerM s r� c s^ t � � d } � D ]}|�� q� D ]}| t � � }|�|� |�� r,��td�� d S qd S )Nr s: failed to kill worker threads while handling an exception
)�timer� �join�is_alive�warnr )�
cleanupend�t�
remainingtime��threadsr r r �trykillworkerss s
����z&_windowsworker.<locals>.trykillworkers� r r g�������?c S s g | ]}|� � s|�qS r )r� )�.0�_tr r r �
<listcomp>� s z"_windowsworker.<locals>.<listcomp>T)r" r� r r r� �Queuer� r� �ranger� �startrL r� �getr� r� r� �remover� r� )r rN rO rP rQ r� r� rF r� r� r� rw �_ir� r� �finishedthreadsr r� r �_windowsworkerL sV �$
�
��
� ��r� c c s$ � t |�D ]
}| |d|� V qdS )a� partition a list into N slices of roughly equal size
The current strategy takes every Nth element from the input. If
we ever write workers that need to preserve grouping in input
we should consider allowing callers to specify a partition strategy.
olivia is not a fan of this partitioning strategy when files are involved.
In his words:
Single-threaded Mercurial makes a point of creating and visiting
files in a fixed order (alphabetical). When creating files in order,
a typical filesystem is likely to allocate them on nearby regions on
disk. Thus, when revisiting in the same order, locality is maximized
and various forms of OS and disk-level caching and read-ahead get a
chance to work.
This effect can be quite significant on spinning disks. I discovered it
circa Mercurial v0.4 when revlogs were named by hashes of filenames.
Tarring a repo and copying it to another disk effectively randomized
the revlog ordering on disk by sorting the revlogs by hash and suddenly
performance of my kernel checkout benchmark dropped by ~10x because the
"working set" of sectors visited no longer fit in the drive's cache and
the workload switched from streaming to random I/O.
What we should really be doing is have workers read filenames from a
ordered queue. This preserves locality and also keeps any worker from
getting more than one file out of balance.
N)r� )�lst�nslices�ir r r r� � s � �r� r� )FT)'�
__future__r rY r
rT r� r" r� r� � BaseSelector� ImportError�
thirdpartyr �i18nr � r r r r r
r r �ispy3r% �objectr& �isposix� iswindowsrA r@ rH rS rK r� r� rJ rf r� r r r r �<module> sN
� !
�% c