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„ Z d e f d „ ƒ YZ d e f d „ ƒ YZ d e f d „ ƒ YZ d e f d „ ƒ YZ d S( s¸ Synchronization functions.
File- and mutex-based mutual exclusion synchronizers are provided,
as well as a name-based mutex which locks within an application
based on a string name.
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RS( sÞ a proxy for an RLock object that is stored in a name based
registry.
Multiple threads can get a reference to the same RLock based on the
name alone, and synchronize operations related to that name.
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d | j o t | ƒ St | t | Sd S( Nt lock_dir( t has_flockR R" t FileSynchronizer( R R! ( ( s: /usr/lib/python2.6/site-packages/beaker/synchronization.pyR J s c K s t | t | S( N( R" t ConditionSynchronizer( R R! ( ( s: /usr/lib/python2.6/site-packages/beaker/synchronization.pyR Q s c B s; e Z e d „ Z d „ Z d „ Z d „ Z e Z e Z RS( c C s t S( N( R ( R R ( ( s: /usr/lib/python2.6/site-packages/beaker/synchronization.pyt acquire_write_lockV s c C s d S( N( ( R ( ( s: /usr/lib/python2.6/site-packages/beaker/synchronization.pyt acquire_read_lockX s c C s d S( N( ( R ( ( s: /usr/lib/python2.6/site-packages/beaker/synchronization.pyt release_write_lockZ s c C s d S( N( ( R ( ( s: /usr/lib/python2.6/site-packages/beaker/synchronization.pyt release_read_lock\ s ( R R R R' R( R) R* R R ( ( ( s: /usr/lib/python2.6/site-packages/beaker/synchronization.pyR U s t SynchronizerImplc B s– e Z d „ Z d e f d „ ƒ YZ d „ Z e e ƒ Z d „ Z e d „ Z d „ Z
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c C sw | i } | i o t d ƒ ‚ n | i p t d ƒ ‚ n | i d j o | i ƒ t | _ n | i d 8_ d S( Ns lock is in writing states lock is not in reading statei ( R5 R0 R R1 R/ t do_release_read_lockR ( R R5 ( ( s: /usr/lib/python2.6/site-packages/beaker/synchronization.pyR* w s
c C s“ | i } | i o t d ƒ ‚ n | i d j o> | i | ƒ } | p | o | i d 7_ t | _ n | S| i o | i d 7_ t Sd S( Ns lock is in writing statei i ( R5 R0 R R/ t do_acquire_read_lockR R1 ( R R R5 t x( ( s: /usr/lib/python2.6/site-packages/beaker/synchronization.pyR( … s
c C sw | i } | i o t d ƒ ‚ n | i p t d ƒ ‚ n | i d j o | i ƒ t | _ n | i d 8_ d S( Ns lock is in reading states lock is not in writing statei ( R5 R1 R R0 R/ t do_release_write_lockR ( R R5 ( ( s: /usr/lib/python2.6/site-packages/beaker/synchronization.pyR) • s
c C s“ | i } | i o t d ƒ ‚ n | i d j o> | i | ƒ } | p | o | i d 7_ t | _ n | S| i o | i d 7_ t Sd S( Ns lock is in reading statei i ( R5 R1 R R/ t do_acquire_write_lockR R0 ( R R R5 R8 ( ( s: /usr/lib/python2.6/site-packages/beaker/synchronization.pyR' ¥ s
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t ƒ ‚ d S( N( R; ( R ( ( s: /usr/lib/python2.6/site-packages/beaker/synchronization.pyR: À s ( R R R
R R. R5 t propertyR* R R( R) R R' R R6 R7 R9 R: ( ( ( s: /usr/lib/python2.6/site-packages/beaker/synchronization.pyR+ b s R% c B sb e Z d Z d „ Z d „ Z e e ƒ Z d „ Z d „ Z d „ Z d „ Z d „ Z
d „ Z RS( s a synchronizer which locks using flock().
Adapted for Python/multithreads from Apache::Session::Lock::File,
http://search.cpan.org/src/CWEST/Apache-Session-1.81/Session/Lock/File.pm
This module does not unlink temporary files,
because it interferes with proper locking. This can cause
problems on certain systems (Linux) whose file systems (ext2) do not
perform well with lots of files in one directory. To prevent this
you should use a script to clean out old files from your lock directory.
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c C sb | i i ƒ z@ | i t i ƒ j o t d ƒ ‚ n d | _ | i i ƒ Wd | i i ƒ Xd S( Ns> Synchronizer error - current thread doesnt have the write lock( RZ R RX R R\ R R R[ R ( R ( ( s: /usr/lib/python2.6/site-packages/beaker/synchronization.pyR9 n s
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