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threading.pyo
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� z fc @ s= d Z d d l Z y d d l Z Wn e k rB e j e =� n Xd d l Z d d l m Z d d l m Z d d l m Z m Z d d l m Z d d d d d d d d d d d d d d d d d g Z e j Z e j Z e j Z e j Z [ e j d d e d d d d �e Z! d e" f d � � YZ# e$ a% e$ a& d � Z' d! � Z( e Z) d" � Z* d# e# f d$ � � YZ+ d% � Z, d& e# f d' � � YZ- d( � Z. d) e# f d* � � YZ/ d+ � Z0 d, e/ f d- � � YZ1 d. � Z2 d/ e# f d0 � � YZ3 e � j4 Z5 e5 � d1 d2 � Z6 e � a7 i Z8 i Z9 d e# f d3 � � YZ: d4 � Z; d5 e: f d6 � � YZ< d7 e: f d8 � � YZ= d9 � Z> d: e: f d; � � YZ? d< � Z@ e@ ZA d= � ZB eB ZC d> � ZD d? � ZE d d@ l mF ZF e= � jG ZH y d dA l mI ZJ Wn! e k rd dB lK mJ ZJ n XdC � ZL dD � ZM e dE k r9eM � n d S(F s; Thread module emulating a subset of Java's threading model.i����N( t deque( t count( t timet sleep( t format_exct activeCountt active_countt Conditiont currentThreadt current_threadt enumeratet Eventt Lockt RLockt Semaphoret BoundedSemaphoret Threadt Timert setprofilet settracet localt stack_sizet ignoret categoryt modulet threadingt messages sys.exc_cleart _Verbosec B s e Z d d � Z d � Z RS( c C s d S( N( ( t selft verbose( ( s! /usr/lib64/python2.7/threading.pyt __init__P s c G s d S( N( ( R t args( ( s! /usr/lib64/python2.7/threading.pyt _noteR s N( t __name__t __module__t NoneR R ( ( ( s! /usr/lib64/python2.7/threading.pyR O s c C s | a d S( s� Set a profile function for all threads started from the threading module. The func will be passed to sys.setprofile() for each thread, before its run() method is called. N( t _profile_hook( t func( ( s! /usr/lib64/python2.7/threading.pyR Z s c C s | a d S( s� Set a trace function for all threads started from the threading module. The func will be passed to sys.settrace() for each thread, before its run() method is called. N( t _trace_hook( R% ( ( s! /usr/lib64/python2.7/threading.pyR d s c O s t | | � S( s2 Factory function that returns a new reentrant lock. A reentrant lock must be released by the thread that acquired it. Once a thread has acquired a reentrant lock, the same thread may acquire it again without blocking; the thread must release it once for each time it has acquired it. ( t _RLock( R t kwargs( ( s! /usr/lib64/python2.7/threading.pyR r s R' c B sb e Z d Z d d � Z d � Z d d � Z e Z d � Z d � Z d � Z d � Z d � Z RS( s A reentrant lock must be released by the thread that acquired it. Once a thread has acquired a reentrant lock, the same thread may acquire it again without blocking; the thread must release it once for each time it has acquired it. c C s2 t j | | � t � | _ d | _ d | _ d S( Ni ( R R t _allocate_lockt _RLock__blockR# t _RLock__ownert _RLock__count( R R ( ( s! /usr/lib64/python2.7/threading.pyR � s c C sH | j } y t | j } Wn t k r- n Xd | j j | | j f S( Ns <%s owner=%r count=%d>( R+ t _activet namet KeyErrort __class__R! R, ( R t owner( ( s! /usr/lib64/python2.7/threading.pyt __repr__� s i c C s] t � } | j | k r, | j d | _ d S| j j | � } | rY | | _ d | _ n | S( s� Acquire a lock, blocking or non-blocking. When invoked without arguments: if this thread already owns the lock, increment the recursion level by one, and return immediately. Otherwise, if another thread owns the lock, block until the lock is unlocked. Once the lock is unlocked (not owned by any thread), then grab ownership, set the recursion level to one, and return. If more than one thread is blocked waiting until the lock is unlocked, only one at a time will be able to grab ownership of the lock. There is no return value in this case. When invoked with the blocking argument set to true, do the same thing as when called without arguments, and return true. When invoked with the blocking argument set to false, do not block. If a call without an argument would block, return false immediately; otherwise, do the same thing as when called without arguments, and return true. i ( t _get_identR+ R, R* t acquire( R t blockingt met rc( ( s! /usr/lib64/python2.7/threading.pyR4 � s c C sX | j t � k r! t d � � n | j d | _ } | sT d | _ | j j � n d S( sm Release a lock, decrementing the recursion level. If after the decrement it is zero, reset the lock to unlocked (not owned by any thread), and if any other threads are blocked waiting for the lock to become unlocked, allow exactly one of them to proceed. If after the decrement the recursion level is still nonzero, the lock remains locked and owned by the calling thread. Only call this method when the calling thread owns the lock. A RuntimeError is raised if this method is called when the lock is unlocked. There is no return value. s cannot release un-acquired locki N( R+ R3 t RuntimeErrorR, R# R* t release( R R ( ( s! /usr/lib64/python2.7/threading.pyR9 � s c C s | j � d S( N( R9 ( R t tt vt tb( ( s! /usr/lib64/python2.7/threading.pyt __exit__� s c C s/ | \ } } | j j � | | _ | | _ d S( N( R* R4 R, R+ ( R t count_ownerR R1 ( ( s! /usr/lib64/python2.7/threading.pyt _acquire_restore� s c C s; | j } d | _ | j } d | _ | j j � | | f S( Ni ( R, R+ R# R* R9 ( R R R1 ( ( s! /usr/lib64/python2.7/threading.pyt _release_save� s c C s | j t � k S( N( R+ R3 ( R ( ( s! /usr/lib64/python2.7/threading.pyt _is_owned� s N( R! R" t __doc__R# R R2 R4 t __enter__R9 R= R? R@ RA ( ( ( s! /usr/lib64/python2.7/threading.pyR' } s & c O s t | | � S( s} Factory function that returns a new condition variable object. A condition variable allows one or more threads to wait until they are notified by another thread. If the lock argument is given and not None, it must be a Lock or RLock object, and it is used as the underlying lock. Otherwise, a new RLock object is created and used as the underlying lock. ( t _Condition( R R( ( ( s! /usr/lib64/python2.7/threading.pyR � s RD c B s} e Z d Z d d d � Z d � Z d � Z d � Z d � Z d � Z d � Z d e d � Z d d � Z d � Z e Z RS( sl Condition variables allow one or more threads to wait until they are notified by another thread. c C s� t j | | � | d k r( t � } n | | _ | j | _ | j | _ y | j | _ Wn t k rl n Xy | j | _ Wn t k r� n Xy | j | _ Wn t k r� n Xg | _ d S( N( R R R# R t _Condition__lockR4 R9 R@ t AttributeErrorR? RA t _Condition__waiters( R t lockR ( ( s! /usr/lib64/python2.7/threading.pyR s& c C s | j j � S( N( RE RC ( R ( ( s! /usr/lib64/python2.7/threading.pyRC s c G s | j j | � S( N( RE R= ( R R ( ( s! /usr/lib64/python2.7/threading.pyR= s c C s d | j t | j � f S( Ns <Condition(%s, %d)>( RE t lenRG ( R ( ( s! /usr/lib64/python2.7/threading.pyR2 # s c C s | j j � d S( N( RE R9 ( R ( ( s! /usr/lib64/python2.7/threading.pyR@ & s c C s | j j � d S( N( RE R4 ( R t x( ( s! /usr/lib64/python2.7/threading.pyR? ) s c C s+ | j j d � r# | j j � t St Sd S( Ni ( RE R4 R9 t Falset True( R ( ( s! /usr/lib64/python2.7/threading.pyRA , s c C sH | j � s t d � � n t � } | j � | j j | � | j � } z� | d k rf | j � n� t � | } d } x� t r | j d � } | r� Pn t | t � | � } | d k r� Pn | r� t | d | d � } n | } t � | } t | � q| W| s2y | j j | � Wq2t k r.q2Xn Wd | j | � Xd S( sj Wait until notified or until a timeout occurs. If the calling thread has not acquired the lock when this method is called, a RuntimeError is raised. This method releases the underlying lock, and then blocks until it is awakened by a notify() or notifyAll() call for the same condition variable in another thread, or until the optional timeout occurs. Once awakened or timed out, it re-acquires the lock and returns. When the timeout argument is present and not None, it should be a floating point number specifying a timeout for the operation in seconds (or fractions thereof). When the underlying lock is an RLock, it is not released using its release() method, since this may not actually unlock the lock when it was acquired multiple times recursively. Instead, an internal interface of the RLock class is used, which really unlocks it even when it has been recursively acquired several times. Another internal interface is then used to restore the recursion level when the lock is reacquired. s cannot wait on un-acquired lockg����Mb@?i i g�������?N( RA R8 R) R4 RG t appendR@ R# t _timeRL t mint _sleept removet ValueErrorR? ( R t timeoutt balancingt waitert saved_statet endtimet delayt gotitt remaining( ( s! /usr/lib64/python2.7/threading.pyt wait5 s> i c C s� | j � s t d � � n | j } | | } | s8 d S| j d | | | d k rY d p\ d � x= | D]5 } | j � y | j | � Wqg t k r� qg Xqg Wd S( sK Wake up one or more threads waiting on this condition, if any. If the calling thread has not acquired the lock when this method is called, a RuntimeError is raised. This method wakes up at most n of the threads waiting for the condition variable; it is a no-op if no threads are waiting. s! cannot notify on un-acquired lockNs" %s.notify(): notifying %d waiter%si t st ( RA R8 RG R R9 RQ RR ( R t nRG t waitersRU ( ( s! /usr/lib64/python2.7/threading.pyt notifyy s c C s | j t | j � � d S( s� Wake up all threads waiting on this condition. If the calling thread has not acquired the lock when this method is called, a RuntimeError is raised. N( R` RI RG ( R ( ( s! /usr/lib64/python2.7/threading.pyt notifyAll� s N( R! R" RB R# R RC R= R2 R@ R? RA RL R[ R` Ra t notify_all( ( ( s! /usr/lib64/python2.7/threading.pyRD � s D c O s t | | � S( sO A factory function that returns a new semaphore. Semaphores manage a counter representing the number of release() calls minus the number of acquire() calls, plus an initial value. The acquire() method blocks if necessary until it can return without making the counter negative. If not given, value defaults to 1. ( t _Semaphore( R R( ( ( s! /usr/lib64/python2.7/threading.pyR � s Rc c B sA e Z d Z d d d � Z d d � Z e Z d � Z d � Z RS( s" Semaphores manage a counter representing the number of release() calls minus the number of acquire() calls, plus an initial value. The acquire() method blocks if necessary until it can return without making the counter negative. If not given, value defaults to 1. i c C sJ | d k r t d � � n t j | | � t t � � | _ | | _ d S( Ni s$ semaphore initial value must be >= 0( RR R R R R t _Semaphore__condt _Semaphore__value( R t valueR ( ( s! /usr/lib64/python2.7/threading.pyR � s c C s] t } | j �H x@ | j d k r< | s, Pn | j j � q W| j d | _ t } Wd QX| S( s Acquire a semaphore, decrementing the internal counter by one. When invoked without arguments: if the internal counter is larger than zero on entry, decrement it by one and return immediately. If it is zero on entry, block, waiting until some other thread has called release() to make it larger than zero. This is done with proper interlocking so that if multiple acquire() calls are blocked, release() will wake exactly one of them up. The implementation may pick one at random, so the order in which blocked threads are awakened should not be relied on. There is no return value in this case. When invoked with blocking set to true, do the same thing as when called without arguments, and return true. When invoked with blocking set to false, do not block. If a call without an argument would block, return false immediately; otherwise, do the same thing as when called without arguments, and return true. i i N( RK Rd Re R[ RL ( R R5 R7 ( ( s! /usr/lib64/python2.7/threading.pyR4 � s c C s1 | j �" | j d | _ | j j � Wd QXd S( s� Release a semaphore, incrementing the internal counter by one. When the counter is zero on entry and another thread is waiting for it to become larger than zero again, wake up that thread. i N( Rd Re R` ( R ( ( s! /usr/lib64/python2.7/threading.pyR9 � s c C s | j � d S( N( R9 ( R R: R; R< ( ( s! /usr/lib64/python2.7/threading.pyR= � s N( R! R" RB R# R R4 RC R9 R= ( ( ( s! /usr/lib64/python2.7/threading.pyRc � s % c O s t | | � S( s� A factory function that returns a new bounded semaphore. A bounded semaphore checks to make sure its current value doesn't exceed its initial value. If it does, ValueError is raised. In most situations semaphores are used to guard resources with limited capacity. If the semaphore is released too many times it's a sign of a bug. If not given, value defaults to 1. Like regular semaphores, bounded semaphores manage a counter representing the number of release() calls minus the number of acquire() calls, plus an initial value. The acquire() method blocks if necessary until it can return without making the counter negative. If not given, value defaults to 1. ( t _BoundedSemaphore( R R( ( ( s! /usr/lib64/python2.7/threading.pyR � s Rg c B s& e Z d Z d d d � Z d � Z RS( s� A bounded semaphore checks to make sure its current value doesn't exceed its initial value. If it does, ValueError is raised. In most situations semaphores are used to guard resources with limited capacity. i c C s t j | | | � | | _ d S( N( Rc R t _initial_value( R Rf R ( ( s! /usr/lib64/python2.7/threading.pyR s c C sQ | j �B | j | j k r+ t d � � n | j d 7_ | j j � Wd QXd S( s6 Release a semaphore, incrementing the internal counter by one. When the counter is zero on entry and another thread is waiting for it to become larger than zero again, wake up that thread. If the number of releases exceeds the number of acquires, raise a ValueError. s! Semaphore released too many timesi N( Rd Re Rh RR R` ( R ( ( s! /usr/lib64/python2.7/threading.pyR9 s N( R! R" RB R# R R9 ( ( ( s! /usr/lib64/python2.7/threading.pyRg s c O s t | | � S( s� A factory function that returns a new event. Events manage a flag that can be set to true with the set() method and reset to false with the clear() method. The wait() method blocks until the flag is true. ( t _Event( R R( ( ( s! /usr/lib64/python2.7/threading.pyR " s Ri c B sS e Z d Z d d � Z d � Z d � Z e Z d � Z d � Z d e d � Z RS( s� A factory function that returns a new event object. An event manages a flag that can be set to true with the set() method and reset to false with the clear() method. The wait() method blocks until the flag is true. c C s/ t j | | � t t � � | _ t | _ d S( N( R R R R t _Event__condRK t _Event__flag( R R ( ( s! /usr/lib64/python2.7/threading.pyR 5 s c C s | j j t � � d S( N( Rj R R ( R ( ( s! /usr/lib64/python2.7/threading.pyt _reset_internal_locks: s c C s | j S( s5 Return true if and only if the internal flag is true.( Rk ( R ( ( s! /usr/lib64/python2.7/threading.pyt isSet> s c C s* | j � t | _ | j j � Wd QXd S( s� Set the internal flag to true. All threads waiting for the flag to become true are awakened. Threads that call wait() once the flag is true will not block at all. N( Rj RL Rk Rb ( R ( ( s! /usr/lib64/python2.7/threading.pyt setD s c C s | j � t | _ Wd QXd S( s� Reset the internal flag to false. Subsequently, threads calling wait() will block until set() is called to set the internal flag to true again. N( Rj RK Rk ( R ( ( s! /usr/lib64/python2.7/threading.pyt clearO s c C s: | j �+ | j s) | j j | | � n | j SWd QXd S( sH Block until the internal flag is true. If the internal flag is true on entry, return immediately. Otherwise, block until another thread calls set() to set the flag to true, or until the optional timeout occurs. When the timeout argument is present and not None, it should be a floating point number specifying a timeout for the operation in seconds (or fractions thereof). This method returns the internal flag on exit, so it will always return True except if a timeout is given and the operation times out. N( Rj Rk R[ ( R RS RT ( ( s! /usr/lib64/python2.7/threading.pyR[ Y s N( R! R" RB R# R Rl Rm t is_setRn Ro RL R[ ( ( ( s! /usr/lib64/python2.7/threading.pyRi , s s Thread-%dc C s | t � S( N( t _counter( t template( ( s! /usr/lib64/python2.7/threading.pyt _newnamep s c B s= e Z d Z e Z e j Z e j Z d d d d d d d � Z d � Z e d � � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d e d � Z e d � � Z e j d � � Z e d � � Z d � Z e Z e d � � Z e j d � � Z d � Z d � Z! d � Z" d � Z# RS( sq A class that represents a thread of control. This class can be safely subclassed in a limited fashion. c C s� t j | | � | d k r% i } n | | _ t | p= t � � | _ | | _ | | _ | j � | _ d | _ t � | _ t | _ t t � � | _ t | _ t j | _ d S( sC This constructor should always be called with keyword arguments. Arguments are: *group* should be None; reserved for future extension when a ThreadGroup class is implemented. *target* is the callable object to be invoked by the run() method. Defaults to None, meaning nothing is called. *name* is the thread name. By default, a unique name is constructed of the form "Thread-N" where N is a small decimal number. *args* is the argument tuple for the target invocation. Defaults to (). *kwargs* is a dictionary of keyword arguments for the target invocation. Defaults to {}. If a subclass overrides the constructor, it must make sure to invoke the base class constructor (Thread.__init__()) before doing anything else to the thread. N( R R R# t _Thread__targett strRs t _Thread__namet _Thread__argst _Thread__kwargst _set_daemont _Thread__daemonict _Thread__identR t _Thread__startedRK t _Thread__stoppedR R t _Thread__blockRL t _Thread__initializedt _syst stderrt _Thread__stderr( R t groupt targetR. R R( R ( ( s! /usr/lib64/python2.7/threading.pyR � s c C s0 t | d � r | j j � n | j j � d S( NR~ ( t hasattrR~ R R| Rl ( R ( ( s! /usr/lib64/python2.7/threading.pyRl � s c C s | j S( N( R~ ( R ( ( s! /usr/lib64/python2.7/threading.pyt _block� s c C s t � j S( N( R t daemon( R ( ( s! /usr/lib64/python2.7/threading.pyRy � s c C s� d } | j j � r d } n | j r0 d } n | j rF | d 7} n | j d k ri | d | j 7} n d | j j | j | f S( Nt initialt startedt stoppeds daemons %ss <%s(%s, %s)>( R| Rp R} Rz R{ R# R0 R! Rv ( R t status( ( s! /usr/lib64/python2.7/threading.pyR2 � s c C s� | j s t d � � n | j j � r6 t d � � n t � | t | <Wd QXy t | j d � Wn( t k r� t � t | =Wd QX� n X| j j � d S( s- Start the thread's activity. It must be called at most once per thread object. It arranges for the object's run() method to be invoked in a separate thread of control. This method will raise a RuntimeError if called more than once on the same thread object. s thread.__init__() not calleds threads can only be started onceN( ( R R8 R| Rp t _active_limbo_lockt _limbot _start_new_threadt _Thread__bootstrapt ExceptionR[ ( R ( ( s! /usr/lib64/python2.7/threading.pyt start� s c C s@ z& | j r% | j | j | j � n Wd | ` | ` | ` Xd S( sX Method representing the thread's activity. You may override this method in a subclass. The standard run() method invokes the callable object passed to the object's constructor as the target argument, if any, with sequential and keyword arguments taken from the args and kwargs arguments, respectively. N( Rt Rw Rx ( R ( ( s! /usr/lib64/python2.7/threading.pyt run� s c C s8 y | j � Wn# | j r- t d k r- d S� n Xd S( N( t _Thread__bootstrap_innerRz R� R# ( R ( ( s! /usr/lib64/python2.7/threading.pyt __bootstrap� s c C s t � | _ d S( N( R3 R{ ( R ( ( s! /usr/lib64/python2.7/threading.pyt _set_ident s c C s� z�| j � | j j � t � | t | j <t | =Wd QXt ra | j d | � t j t � n t r� | j d | � t j t � n zy | j � Wnt k r� n� t r� t j d k r� t j d | j t � f IJq�| j d k r�| j � \ } } } z� | j d | j d IJ| j d IJxB | rs| j d | j j j | j | j j j f IJ| j } q2W| j d | | f IJWd ~ ~ ~ Xq�n XWd | j � XWd t �' | j � y t t � =Wn n XWd QXXd S( Ns( %s.__bootstrap(): registering trace hooks* %s.__bootstrap(): registering profile hooks Exception in thread %s: %ss Exception in thread s2 (most likely raised during interpreter shutdown):s" Traceback (most recent call last):s File "%s", line %s, in %ss %s: %s( R� R| Rn R� R- R{ R� R& R R� R R$ R R� t SystemExitR� R# R. t _format_excR� t _Thread__exc_infot tb_framet f_codet co_filenamet tb_linenot co_namet tb_nextt _Thread__exc_cleart _Thread__stopR3 ( R t exc_typet exc_valuet exc_tb( ( s! /usr/lib64/python2.7/threading.pyt __bootstrap_inner s\ c C sG t | d � s d S| j j � t | _ | j j � | j j � d S( NR~ ( R� R~ R4 RL R} Rb R9 ( R ( ( s! /usr/lib64/python2.7/threading.pyt __stop] s c C sH y t � t t � =Wd QXWn& t k rC d t j k rD � qD n Xd S( sA Remove current thread from the dict of currently running threads.Nt dummy_threading( R� R- R3 R/ R� t modules( R ( ( s! /usr/lib64/python2.7/threading.pyt __deleteg s c C s� | j s t d � � n | j j � s6 t d � � n | t � k rT t d � � n | j j � z} | d k r� xj | j s� | j j � qs WnM t � | } x= | j s� | t � } | d k r� Pn | j j | | � q� WWd | j j � Xd S( s Wait until the thread terminates. This blocks the calling thread until the thread whose join() method is called terminates -- either normally or through an unhandled exception or until the optional timeout occurs. When the timeout argument is present and not None, it should be a floating point number specifying a timeout for the operation in seconds (or fractions thereof). As join() always returns None, you must call isAlive() after join() to decide whether a timeout happened -- if the thread is still alive, the join() call timed out. When the timeout argument is not present or None, the operation will block until the thread terminates. A thread can be join()ed many times. join() raises a RuntimeError if an attempt is made to join the current thread as that would cause a deadlock. It is also an error to join() a thread before it has been started and attempts to do so raises the same exception. s Thread.__init__() not calleds' cannot join thread before it is starteds cannot join current threadi N( R R8 R| Rp R R~ R4 R# R} R[ RN R9 ( R RS RT t deadlineRX ( ( s! /usr/lib64/python2.7/threading.pyt join� s( c C s | j S( s� A string used for identification purposes only. It has no semantics. Multiple threads may be given the same name. The initial name is set by the constructor. ( Rv ( R ( ( s! /usr/lib64/python2.7/threading.pyR. � s c C s t | � | _ d S( N( Ru Rv ( R R. ( ( s! /usr/lib64/python2.7/threading.pyR. � s c C s | j S( s; Thread identifier of this thread or None if it has not been started. This is a nonzero integer. See the thread.get_ident() function. Thread identifiers may be recycled when a thread exits and another thread is created. The identifier is available even after the thread has exited. ( R{ ( R ( ( s! /usr/lib64/python2.7/threading.pyt ident� s c C s | j j � o | j S( s� Return whether the thread is alive. This method returns True just before the run() method starts until just after the run() method terminates. The module function enumerate() returns a list of all alive threads. ( R| Rp R} ( R ( ( s! /usr/lib64/python2.7/threading.pyt isAlive� s c C s | j S( s� A boolean value indicating whether this thread is a daemon thread (True) or not (False). This must be set before start() is called, otherwise RuntimeError is raised. Its initial value is inherited from the creating thread; the main thread is not a daemon thread and therefore all threads created in the main thread default to daemon = False. The entire Python program exits when only daemon threads are left. 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