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" !r5c[[R[5 UR 5 SSS5 g!,(df  g=fr<)rrErrorrNrrAs r6__del___ForkSafeConnection.__del__s% gmm\ 2 JJL3 2 2s 9 Ar)rr$rr$rYrrX)rSr[rYrZ) r/r0r1r2r3rrrrr4 __classcell__rs@r6rrsVBB$(  $/k/ /r5rc^\rSrSr%SrS\S'S\S'S\S'S \S 'SS S S .SU4S jjjjrSSjrSrU=r $)_ReadWriteLockMetaz Resolve singleton instances for ``is_singleton=True`` construction. This logic lives here rather than in ReadWriteLock.get_lock so ``ReadWriteLock(path)`` returns cached instances without a 2-arg ``super()`` call that type checkers cannot verify. 0WeakValueDictionary[pathlib.Path, ReadWriteLock] _instanceszthreading.RLock_instances_lockr,_instances_pidzset[pathlib.Path]_instances_under_constructionTblocking is_singletonc >[5 UR[5:waUR5 [5nU(d+[T U]XX4S9n[5U:wa Sn[ U5eU$[R"U5R5nUR XR;aXR;aSU<3n[ U5eURn U RU5 [T U]XX4S9n[5U:XaU RU5 [5U:wa Sn[ U5eX`RU'OURUnURU:wdUR U:wa-SURSUR SUSU3n[#U5eUsSSS5 $![5U:XaU RU5 ff=f!,(df  g=f)Nrz5ReadWriteLock construction cannot continue after forkz2Singleton lock construction is already active for z$Singleton lock created with timeout=z , blocking=z, cannot be changed to timeout=)rrr_reset_class_after_forkr__call__rNpathlibPathresolverrrrpdiscardtimeoutr ValueError) r lock_filerrrconstruction_pidinstancerR normalizedconstruction_registryrs r6r_ReadWriteLockMeta.__call__s !    *  ' ' )"9w' X'iHy,,M"3''O\\),446  /!B!BBNym\C&s++(+(I(I%%))*5B$w/ X/qHy$44-55jA9 00QC&s++-5z*>>*57*h.?.?8.K:8;K;K:LKX`XiXiWjk55rrrrbr)rs r6r*_ReadWriteLockMeta._reset_class_after_forks/,.'oo/$Y,/E)r5r.) rstr | os.PathLike[str]rfloatrboolrrrY ReadWriteLockrX) r/r0r1r2__doc__r3rrr4rrs@r6rrszA@$$#44 - ! -)--  -  - --^22r5rcL^\rSrSr%Sr\"5rS\S'\R"5r \ "5r \ "5rS\S'S'U4Sjjr\S(SS .S)S jjj5rS(SSS .S*S jjjrS(SS .S+S jjjrS(SS .S+Sjjjr\S,SS .S-Sjjj5r\S,SS .S-Sjjj5rSS.S.SjjrS'SjrS/SjrS'SjrS'SjrS'Sjr\S0Sj5rS'Sjr S1Sjr!S2Sjr"S3Sjr#S4Sjr$S5S jr%S'S!jr&S6S"jr'S7S#jr(S8S$jr)S9S%jr*S&r+U=r,$):ra8 Cross-process read-write lock backed by SQLite. Allows concurrent shared readers or a single exclusive writer. The lock is reentrant within the same mode (multiple ``acquire_read`` calls nest, as do multiple ``acquire_write`` calls from the same thread), but upgrading from read to write or downgrading from write to read raises :class:`RuntimeError`. Write locks are pinned to the thread that acquired them. By default, ``is_singleton=True``: calling ``ReadWriteLock(path)`` with the same resolved path returns the same instance. The path is handed to :func:`sqlite3.connect` as given, so a ``.db`` extension is a convention rather than a requirement; the filesystem must be one the active SQLite VFS supports. :param lock_file: path to the SQLite database file used as the lock :param timeout: maximum wait time in seconds; ``-1`` means block indefinitely :param blocking: if ``False``, raise :class:`~filelock.Timeout` immediately when the lock is unavailable :param is_singleton: if ``True``, reuse existing instances for the same resolved path .. versionadded:: 3.21.0 rrzClassVar[set[pathlib.Path]]rc>[TU]5 [5Ul[R "5Ul[5Ul[5Ul [U5 gr<) r__init_subclass__r rr=r>rrrrbrr)rrs r6rReadWriteLock.__init_subclass__sC !#,.'oo/$Y,/E)S!r5TrcU"XUS9$)a Return the singleton :class:`ReadWriteLock` for *lock_file*. :param lock_file: path to the SQLite database file used as the lock :param timeout: maximum wait time in seconds; ``-1`` means block indefinitely :param blocking: if ``False``, raise :class:`~filelock.Timeout` immediately when the lock is unavailable :returns: the singleton lock instance :raises ValueError: if an instance already exists for this path with different *timeout* or *blocking* values rr.)rrrrs r6get_lockReadWriteLock.get_locks 999r5rc[R"U5Ul[R"U5R 5Ul[RUR 5 X l X0l [R"5Ul [R"5UlSUlSUlSUl[%5UlSUlSUlSUlSUl[15UlSUl[7U5 [95 [;5 UR=SS9nUR?5 SSS5 SSS5 g!,(df  N=f!,(df  g=f)NrTFg@sqlite_timeout) osfspathrrrr_canonical_pathrrmrrr=Lock_transaction_lock_internal_lock _lock_level _current_mode_write_thread_idrb_acquisition_thread_ids_con _connection_transaction_released_connection_identity_closedrr_fork_invalidatedrrr_open_connectionr)rBrrrrvalidation_connections r6rCReadWriteLock.__init__,s 9-&||I6>>@++D,@,@A  !*!1'nn.>B,014$04 04->B! #I!&d#  !3!5$($9$9$9$M ! ! ' ' )"6  !5!5  s$ E E :E E E E*c"URSXS9$)a Acquire a shared read lock. If this instance already holds a read lock, the lock level is incremented (reentrant). Attempting to acquire a read lock while holding a write lock raises :class:`RuntimeError` (downgrade not allowed). :param timeout: maximum wait time in seconds; ``-1`` means block indefinitely :param blocking: if ``False``, raise :class:`~filelock.Timeout` immediately when the lock is unavailable :returns: a proxy that can be used as a context manager to release the lock :raises RuntimeError: if a write lock is already held on this instance :raises Timeout: if the lock cannot be acquired within *timeout* seconds readr_acquirerBrrs r6 acquire_readReadWriteLock.acquire_readJs }}VW}@@r5c"URSXS9$)a. Acquire an exclusive write lock. If this instance already holds a write lock from the same thread, the lock level is incremented (reentrant). Attempting to acquire a write lock while holding a read lock raises :class:`RuntimeError` (upgrade not allowed). Write locks are pinned to the acquiring thread: a different thread trying to re-enter also raises :class:`RuntimeError`. :param timeout: maximum wait time in seconds; ``-1`` means block indefinitely :param blocking: if ``False``, raise :class:`~filelock.Timeout` immediately when the lock is unavailable :returns: a proxy that can be used as a context manager to release the lock :raises RuntimeError: if a read lock is already held, or a write lock is held by a different thread :raises Timeout: if the lock cannot be acquired within *timeout* seconds writerrrs r6 acquire_writeReadWriteLock.acquire_write\s$}}Wg}AAr5Nc## Uc URnUc URnURXS9 Sv UR5 g!UR5 f=f7f)aU Context manager that acquires and releases a shared read lock. Falls back to instance defaults for *timeout* and *blocking* when ``None``. :param timeout: maximum wait time in seconds, or ``None`` to use the instance default :param blocking: if ``False``, raise :class:`~filelock.Timeout` immediately; ``None`` uses the instance default Nr)rrrreleasers r6 read_lockReadWriteLock.read_lockpsO ?llG  }}H '5   LLNDLLN.AAAAAc## Uc URnUc URnURXS9 Sv UR5 g!UR5 f=f7f)aZ Context manager that acquires and releases an exclusive write lock. Falls back to instance defaults for *timeout* and *blocking* when ``None``. :param timeout: maximum wait time in seconds, or ``None`` to use the instance default :param blocking: if ``False``, raise :class:`~filelock.Timeout` immediately; ``None`` uses the instance default Nr)rrrrrs r6 write_lockReadWriteLock.write_locksO ?llG  }}H 76   LLNDLLNrF)forcec[5 [5 UR(a SSS5 gURS5 UR USS9 SSS5 g!,(df  g=f)aD Release one level of the current lock. When the lock level reaches zero the underlying SQLite transaction is rolled back, releasing the database lock. :param force: if ``True``, release the lock completely regardless of the current lock level :raises RuntimeError: if no lock is currently held and *force* is ``False`` NrFrrrr _inherited_raise_if_acquiring_release)rBrs r6rReadWriteLock.releasesN  # %   $ $Y / MMUM 3   A!A A)c[5 [5 UR(a SSS5 gURS5 UR SSS9 SSS5 g!,(df  g=f)z Release the lock (if held) and close the underlying SQLite connection. After calling this method, the lock instance is no longer usable. 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'*u$!%r5cVUR=(d [5UR:g$r<)rrrrAs r6rReadWriteLock._inheriteds %%Gd6G6G)GGr5c[5 UR(aSURS3n[U5eUR(aSn[ R "U5eg)NReadWriteLock on 4 was invalidated by fork(); construct a new instancez$Cannot operate on a closed database.)rrrrNrrProgrammingError)rBrRs r6_raise_if_unusable ReadWriteLock._raise_if_unusablesP! ??%dnn%55ijCs# # <<8C**3/ / r5c [5 UR5 [5n[R"5nUR  UR S:a#URU5sSSS5 sSSS5 $XPR;aSURS3n[U5eURRU5 SSS5 [R"5nURX2S9 UR5 URUUUUUS9UR R#5 UR  URR%U5 SSS5 sSSS5 $!,(df  N=f!,(df  N)=f!UR R#5 f=f!UR  URR%U5 SSS5 f!,(df  f=f=f!,(df  g=f)Nrz Cannot acquire ReadWriteLock on + while acquisition is active in this threadrrr operation_pid start_time)rrrr= get_identrr_validate_reentrantrrrNrptime perf_counter_acquire_transaction_lock_do_acquire_innerrrr)rBmoderrr thread_idrRrs r6rReadWriteLock._acquires    # # %#IM!++-I$$##a'33D9%$   < <<W  * *= 9" ! !s A8B  Bc[5 UupV[SUR5n[R"5U- n[ X#US9n UR U5 URSU S35R5 [R"5U- n[ X#US9n UR U5 X:waSU S3OSn XS:XaSOS - n US :XaU S - n URU 5R5 SSS5 g!,(df  g=f) Nrr7zPRAGMA busy_timeout=z; PRAGMA journal_mode=MEMORY;z; rzBEGIN EXCLUSIVE TRANSACTION;zBEGIN TRANSACTION;rz( SELECT name FROM sqlite_schema LIMIT 1;) rr rr r!r:r- executescriptr) rBr$rrr(rrrwaited timeout_ms recomputed statementss r6r,"ReadWriteLock._configure_and_beginVs !(1 %M3TYY?J&&(:5F+GW]^J  * *= 9  $ $';J`bJ GO8Qe eJv~HH  $ $Z 0 6 6 8-" ! !s C'C;; D c[5 [5n[R5n[5U:wa Sn[ U5e[ [ R"UR5[US9nUbURU5 [5U:waJ[RUR[RUR55 Sn[ U5eUsSSS5 $!,(df  g=f)Nz9SQLite connection construction cannot continue after fork)factoryr)rrr\rSrN_connectrrrrrrrqri)rBr creator_pidrSrRrs r6rReadWriteLock._open_connectionvs  !!)K*446IyK'Q"3''! $../+&J $)))4yK'!33((%..t/C/CDR"3'')" ! !s CC)) C7c,[5 UR=nc SSS5 gSnUR(d1UR(aUR 5 SUlOSUlUR5 SUlSUlSUl UbUeSSS5 g![ R a%nUR(aeSUlUnSnANiSnAff=f![ R anUb [X$5 eSnAff=f!,(df  g=frt) rrrin_transactionrollbackrrrrr)rBrrollback_errorr2 close_errors r6r ReadWriteLock._finish_connections  !"ii' 0" !48N88,,E"++-AE=<@D9   " DI48D 1(,D %)$$*5" !#==/%44!@D=). /== !-).F '" !s^D$D BD*C:DC2C DCDD.C==DD Dc URU:waDUS:XaSOSnUS:XaSOSnSUSURS[U5SUS US 3 n[U5eUS:XaZ[R "5=oPR :wa6S URS[U5S US UR 3n[U5eU=RS- sl[US9$)Nrr downgradeupgradezCannot acquire z lock on rz): already holding a z lock (z not allowed)zCannot acquire write lock on z) from thread z while it is held by thread r r)) rrrrNr=rrrr)rBr$opposite directionrRcurs r6r!ReadWriteLock._validate_reentrants    %"&&.wfH'+v~ 9I!$y0@ BtH:V%%-Jgi[ O s# # 7?y':':'< <AVAVV//?{2d8*U"e#?@U@U?VX s# # A!t,,r5cU(dURRSS9nO:US:XaURRSS9nOURRSUS9nU(d[UR5Seg)NFrrTr)racquirerr)rBrracquireds r6r"'ReadWriteLock._acquire_transaction_locksr--55u5EH ]--55t5DH--55tW5UH$..)t 3r5cUR [R"5UR;nSSS5 W(aSUSURS3n[ U5eg!,(df  N4=f)NzCannot z ReadWriteLock on r)rr=rrrrN)rBr(active_in_current_threadrRs r6r!ReadWriteLock._raise_if_acquiringsa  '0':':'<@\@\'\ $! #I;&88HHstCs# # $! s #A A,cx[5U:wdUR(aSURS3n[U5eg)Nrr)rrrrN)rBrrRs r6r-'ReadWriteLock._raise_if_process_changeds6 9 %%dnn%55ijCs# #*9r5)rrrrrrrrrrrrrrrrrXr)rrrrrrrYr) rrrrrrrrrYrZ)rrrrrYrr<)rz float | Nonerz bool | NonerYGenerator[None])rrrYrZ)rrrrrYrZ)rYr)r$Literal['read', 'write']rrrrrYr) r$r`rrrrrr,rrrYr) rrrrrr,rrrYrZ) r$r`rrrrr(ztuple[int, float]rYrZ)rrrYr)r$r`rYr)rrrrrYrZ)r(z&Literal['acquire', 'close', 'release']rYrZ)rr,rYrZ)-r/r0r1r2rr rr3r=r>rrrrbrr classmethodrrCrrrrrrrrrrrVpropertyrrrr#r+r,rrrr"rr-r4rrs@r6rrs*DWCXJ@Xoo'OYNAD!#>F"AC:Y]:.:9>:RV: ::(* ! *)**  *  * *<ADAA$BTBB(QU(RV((-4$ 2$.% # &HH0D<0-&0-0-  0-  0-0- 0-d:$9&99  9 % 9 9@.%<-$4$$$r5r) metaclasscZ[R5 [R"USUSUS9$)NFr)check_same_threadrEcached_statementsr)rrurconnect)databaserErs r6rFrFs.%%' ??  r5c## [=RS- slSv [=RS-slg![=RS-slf=f7f)Nr )r7r-r.r5r6rrsA$$)$. 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