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forkserver.cpython-39.pyc
a ÕDOgn/ ã @ sú d dl Z d dlZd dlZd dlZd dlZd dlZd dlZd dlZd dlZddl m Z ddl m Z ddl m Z ddl mZ ddl mZ ddl mZ g d ¢Zd Ze d ¡ZG d d „ d eƒZddd„Zdd„ Zdd„ Zdd„ Zeƒ Zej Z ej Z ej Z ej Z dS )é Né )Ú connection)Úprocess)Ú reduction)Úresource_tracker)Úspawn)Úutil)Úensure_runningÚget_inherited_fdsÚconnect_to_new_processÚset_forkserver_preloadé Úqc @ sD e Zd Zdd„ Zdd„ Zdd„ Zdd„ Zd d „ Zd d „ Zd d„ Z dS )Ú ForkServerc C s. d | _ d | _d | _d | _t ¡ | _dg| _d S )NÚ__main__)Ú_forkserver_addressÚ_forkserver_alive_fdÚ_forkserver_pidÚ_inherited_fdsÚ threadingÚLockÚ_lockÚ_preload_modules©Úself© r ú2/usr/lib64/python3.9/multiprocessing/forkserver.pyÚ__init__" s zForkServer.__init__c C s2 | j | ¡ W d ƒ n1 s$0 Y d S ©N)r Ú_stop_unlockedr r r r Ú_stop* s zForkServer._stopc C sV | j d u rd S t | j¡ d | _t | j d¡ d | _ t | j¡sLt | j¡ d | _d S )Nr ) r ÚosÚcloser Úwaitpidr Ú is_abstract_socket_namespacer Úunlinkr r r r r / s zForkServer._stop_unlockedc C s& t dd„ | jD ƒƒs tdƒ‚|| _dS )z>Set list of module names to try to load in forkserver process.c s s | ]}t |ƒtu V qd S r )ÚtypeÚstr)Ú.0Úmodr r r Ú <genexpr>@ ó z4ForkServer.set_forkserver_preload.<locals>.<genexpr>z&module_names must be a list of stringsN)Úallr Ú TypeError)r Z modules_namesr r r r > s z!ForkServer.set_forkserver_preloadc C s | j S )z”Return list of fds inherited from parent process. This returns None if the current process was not started by fork server. )r r r r r r D s z ForkServer.get_inherited_fdsc C s | ¡ t|ƒd tkr tdƒ‚t tj¡Ü}| | j¡ t ¡ \}}t ¡ \}}||| j t ¡ g}||7 }zvz:t ||¡ ||fW W t |¡ t |¡ W d ƒ S t |¡ t |¡ ‚ Y n0 W t |¡ t |¡ nt |¡ t |¡ 0 W d ƒ n1 s0 Y dS )a; Request forkserver to create a child process. Returns a pair of fds (status_r, data_w). The calling process can read the child process's pid and (eventually) its returncode from status_r. The calling process should write to data_w the pickled preparation and process data. é z too many fdsN)r ÚlenÚMAXFDS_TO_SENDÚ ValueErrorÚsocketÚAF_UNIXÚconnectr r! Úpiper r Zgetfdr Úsendfdsr" )r ÚfdsÚclientÚparent_rÚchild_wÚchild_rÚparent_wZallfdsr r r r L s2 ÿ ù ÿ z!ForkServer.connect_to_new_processc sÈ | j ª t ¡ | jdurbt | jtj¡\}}|sDW d ƒ dS t | j¡ d| _ d| _d| _d}| j r–ddh‰ t d¡}‡ fdd„| ¡ D ƒ}ni }t tj¡ì}t d¡}| |¡ t |¡sÒt |d ¡ | ¡ t ¡ \}}z~zV| ¡ |g} || ¡ || j |f; }t ¡ } | gt ¡ } | d |g7 } t | | | ¡}W n t |¡ ‚ Y n0 W t |¡ n t |¡ 0 || _ || _|| _W d ƒ n1 sš0 Y W d ƒ n1 sº0 Y dS ) zíMake sure that a fork server is running. This can be called from any process. Note that usually a child process will just reuse the forkserver started by its parent, so ensure_running() will do nothing. NzCfrom multiprocessing.forkserver import main; main(%d, %d, %r, **%r)Ú main_pathÚsys_pathÚignorec s i | ]\}}|ˆ v r||“qS r r )r( ÚxÚy©Z desired_keysr r Ú <dictcomp>„ r+ z-ForkServer.ensure_running.<locals>.<dictcomp>r3 i€ z-c) r r r r r! r# ÚWNOHANGr" r r r r Zget_preparation_dataÚitemsr2 r3 r Úarbitrary_addressÚbindr r$ ÚchmodÚlistenr5 ÚfilenoZget_executableÚ _args_from_interpreter_flagsÚspawnv_passfds) r ÚpidÚstatusÚcmdÚdataÚlistenerÚaddressÚalive_rZalive_wZ fds_to_passZexeÚargsr rB r r i sN ÿ zForkServer.ensure_runningN) Ú__name__Ú __module__Ú __qualname__r r r r r r r r r r r r s r c C s |rjd|v r@|dur@dt ¡ _zt |¡ W t ¡ `n t ¡ `0 |D ]$}z t|ƒ W qD tyf Y qD0 qDt ¡ t ¡ \}}t |d¡ t |d¡ dd„ }t j |t jt ji} dd„ | ¡ D ƒ} t |¡ i } tjtj| d } t ¡ ì} | ¡ t_| | tj¡ | |tj¡ | |tj¡ zjd d „ | ¡ D ƒ}|r(qHq(||v rpt |d ¡d kslJ dƒ‚t ‚||v r(t |d¡ zt dt j ¡\}}W n t y¶ Y q(Y n0 |dkrÆq(| !|d¡}|durt "|¡}zt#||ƒ W n t$y Y n0 t %|¡ nt& 'd| ¡ q†| |v rŽ| (¡ d <}t) *|t+d ¡}t,|ƒt+krrt-d .t,|ƒ¡ƒ‚|^}}}| %¡ t /¡ }|dkr"d }zxz<| %¡ | %¡ ||||g}| 0| 1¡ ¡ t2|||| ƒ}W n, t3y t4j5t4 6¡ Ž t4j7 8¡ Y n0 W t 9|¡ n t 9|¡ 0 nLzt#||ƒ W n t$yD Y n0 || |< t %|¡ |D ]}t %|¡ q\W d ƒ n1 s„0 Y W n6 t:yÆ } z |j;t;j<kr²‚ W Y d}~n d}~0 0 q$W d ƒ n1 sâ0 Y W d ƒ n1 s0 Y dS )zRun forkserver.r NTFc W s d S r r )Z_unusedr r r Úsigchld_handler¼ s z main.<locals>.sigchld_handlerc S s i | ]\}}|t ||¡“qS r )Úsignal)r( ÚsigÚvalr r r rC Æ s ÿzmain.<locals>.<dictcomp>)rJ c S s g | ]\}}|j ‘qS r )Úfileobj)r( ÚkeyÚeventsr r r Ú <listcomp>Ú r+ zmain.<locals>.<listcomp>r r+ z Not at EOF?i éÿÿÿÿr z.forkserver: waitpid returned unexpected pid %dz Too many ({0:n}) fds to send)=r Úcurrent_processZ _inheritingr Zimport_main_pathÚ __import__Ú ImportErrorr Ú _close_stdinr! r5 Ú set_blockingrY ÚSIGCHLDÚSIGINTÚSIG_IGNrE Ú set_wakeup_fdr2 r3 Ú selectorsÚDefaultSelectorÚ getsocknameÚ _forkserverr ÚregisterÚ EVENT_READÚselectÚreadÚ SystemExitr# rD ÚChildProcessErrorÚpopÚwaitstatus_to_exitcodeÚ write_signedÚBrokenPipeErrorr" ÚwarningsÚwarnÚacceptr Úrecvfdsr0 r/ Ú RuntimeErrorÚformatÚforkÚextendÚvaluesÚ _serve_oneÚ ExceptionÚsysÚ excepthookÚexc_infoÚstderrÚflushÚ_exitÚOSErrorÚerrnoZ ECONNABORTED)Z listener_fdrS Zpreloadr= r> ÚmodnameZsig_rZsig_wrX ÚhandlersZ old_handlersZ pid_to_fdrQ ÚselectorZrfdsrM Ústsr: Ú returncodeÚsr7 r; ÚcodeÚ unused_fdsÚfdÚer r r Úmain§ sÀ üÿ ÿ ÿ ÿÿ þ 2r• c C sh t d¡ | ¡ D ]\}}t ||¡ q|D ]}t |¡ q,|^t_tj_ t_ t | ¡}t | |¡}|S )Nr` )rY ri rE r! r" rm r r Ú_resource_trackerZ_fdr Údupr Z_main) r; r7 r’ rŒ rZ r[ r“ Úparent_sentinelr‘ r r r r + s þ r c C sN d}t j}t|ƒ|k r@t | |t|ƒ ¡}|s6tdƒ‚||7 }q t |¡d S )Nr+ zunexpected EOFr )Ú SIGNED_STRUCTÚsizer/ r! rq ÚEOFErrorÚunpack)r“ rP Úlengthr r r r Ú read_signedB s rž c C s< t |¡}|r8t | |¡}|dkr*tdƒ‚||d … }q d S )Nr zshould not get here)r™ Úpackr! Úwriter| )r“ ÚnÚmsgÚnbytesr r r rv L s rv )NN) rŠ r! rj rY r2 Ústructrƒ r rx Ú r r Úcontextr r r r Ú__all__r0 ÚStructr™ Úobjectr r• r rž rv rm r r r r r r r r Ú<module> s: