File: //lib/python3/dist-packages/twisted/internet/__pycache__/base.cpython-38.pyc
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Very basic functionality for a Reactor implementation.
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@param time: Seconds from the epoch at which to call C{func}.
@param func: The callable to call.
@param args: The positional arguments to pass to the callable.
@param kw: The keyword arguments to pass to the callable.
@param cancel: A callable which will be called with this
DelayedCall before cancellation.
@param reset: A callable which will be called with this
DelayedCall after changing this DelayedCall's scheduled
execution time. The callable should adjust any necessary
scheduling details to ensure this DelayedCall is invoked
at the new appropriate time.
@param seconds: If provided, a no-argument callable which will be
used to determine the current time any time that information is
needed.
r N���)�time�func�args�kw�resetter� cancellerr � cancelled�called� delayed_time�debug� traceback� format_stack�creator)�selfr( r) r* r+ �cancel�resetr � r8 �7/usr/lib/python3/dist-packages/twisted/internet/base.py�__init__4 s zDelayedCall.__init__c C s | j | j S )z�Return the time at which this call will fire
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@return: The number of seconds after the epoch at which this call is
scheduled to be made.
�r( r0 �r5 r8 r8 r9 �getTimeO s zDelayedCall.getTimec C sL | j rtj�n:| jr tj�n,| �| � d| _ | jr<t| �| _| ` | `
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@raise AlreadyCancelled: Raised if this call has already been
unscheduled.
@raise AlreadyCalled: Raised if this call has already been made.
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zDelayedCall.cancelc C sZ | j rtj�nH| jr tj�n:| �� | }|| jk rJd| _|| _| �| � n || j | _dS )as Reschedule this call for a different time
@type secondsFromNow: C{float}
@param secondsFromNow: The number of seconds from the time of the
C{reset} call at which this call will be scheduled.
@raise AlreadyCancelled: Raised if this call has been cancelled.
@raise AlreadyCalled: Raised if this call has already been made.
r N) r. r r? r/ r@ r r( r0 r, )r5 ZsecondsFromNowZnewTimer8 r8 r9 r7 k s
zDelayedCall.resetc C sJ | j rtj�n8| jr tj�n*| j|7 _| jdk rF| �� | �| � dS )ai Reschedule this call for a later time
@type secondsLater: C{float}
@param secondsLater: The number of seconds after the originally
scheduled time for which to reschedule this call.
@raise AlreadyCancelled: Raised if this call has been cancelled.
@raise AlreadyCalled: Raised if this call has already been made.
r N)r. r r? r/ r@ r0 �activate_delayr, )r5 Z secondsLaterr8 r8 r9 �delay� s
zDelayedCall.delayc C s | j | j7 _ d| _d S �Nr r; r< r8 r8 r9 rC � s zDelayedCall.activate_delayc C s | j p
| j S )z�Determine whether this call is still pending
@rtype: C{bool}
@return: True if this call has not yet been made or cancelled,
False otherwise.
)r. r/ r< r8 r8 r9 �active� s zDelayedCall.activec C s | j |j kS )z�
Implement C{<=} operator between two L{DelayedCall} instances.
Comparison is based on the C{time} attribute (unadjusted by the
delayed time).
�r( �r5 �otherr8 r8 r9 �__le__� s zDelayedCall.__le__c C s | j |j k S )z�
Implement C{<} operator between two L{DelayedCall} instances.
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delayed time).
rG rH r8 r8 r9 �__lt__� s zDelayedCall.__lt__c C sN | j dk r| j S t| d�rrt| jd�r0| jj}qvt| jd�rd| jj}t| jd�rp| jjjd | }qvt�| j�}nd}| � � }dt
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Implement C{repr()} for L{DelayedCall} instances.
@rtype: C{str}
@returns: String containing details of the L{DelayedCall}.
Nr) � __qualname__�__name__�im_class�.z.<DelayedCall 0x%x [%ss] called=%s cancelled=%s� �(z, c S s g | ]}t �|��qS r8 �r � safe_repr)�.0�er8 r8 r9 �
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traceback at creation:
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r& c @ s: e Zd ZdZdd� Zdd� Zdd� Zdd � Zdd d �Zd
S )�ThreadedResolvera�
L{ThreadedResolver} uses a reactor, a threadpool, and
L{socket.gethostbyname} to perform name lookups without blocking the
reactor thread. It also supports timeouts indepedently from whatever
timeout logic L{socket.gethostbyname} might have.
@ivar reactor: The reactor the threadpool of which will be used to call
L{socket.gethostbyname} and the I/O thread of which the result will be
delivered.
c C s || _ i | _d S �N)�reactor�_runningQueries)r5 ri r8 r8 r9 r: � s zThreadedResolver.__init__c C s t �d||f �}t�|�S )Nzaddress %r not found: %s)r �DNSLookupErrorr �Failure)r5 �name�errr8 r8 r9 �_fail� s zThreadedResolver._failc C s, | j | \}}| j |= |�| �|d�� d S )Nz
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See L{twisted.internet.interfaces.IResolverSimple.getHostByName}.
Note that the elements of C{timeout} are summed and the result is used
as a timeout for the lookup. Any intermediate timeout or retry logic
is left up to the platform via L{socket.gethostbyname}.
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rB d|f }t�|�}t�|� Y S X t�|�S d S )Nzaddress %r not found)r� r� r rk r Zfail�succeed)r5 rm r� Zaddress�msgrn r8 r8 r9 r� - s
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Collection of callables (with arguments) which can be invoked as a group in
a particular order.
This provides the underlying implementation for the reactor's system event
triggers. An instance of this class tracks triggers for all phases of a
single type of event.
@ivar before: A list of the before-phase triggers containing three-tuples
of a callable, a tuple of positional arguments, and a dict of keyword
arguments
@ivar finishedBefore: A list of the before-phase triggers which have
already been executed. This is only populated in the C{'BEFORE'} state.
@ivar during: A list of the during-phase triggers containing three-tuples
of a callable, a tuple of positional arguments, and a dict of keyword
arguments
@ivar after: A list of the after-phase triggers containing three-tuples
of a callable, a tuple of positional arguments, and a dict of keyword
arguments
@ivar state: A string indicating what is currently going on with this
object. One of C{'BASE'} (for when nothing in particular is happening;
this is the initial value), C{'BEFORE'} (when the before-phase triggers
are in the process of being executed).
c C s g | _ g | _g | _d| _d S )N�BASE)�before�during�after�stater< r8 r8 r9 r: U s z_ThreePhaseEvent.__init__c O s2 |dkrt d��t| |��|||f� ||||fS )a�
Add a trigger to the indicate phase.
@param phase: One of C{'before'}, C{'during'}, or C{'after'}.
@param callable: An object to be called when this event is triggered.
@param *args: Positional arguments to pass to C{callable}.
@param **kwargs: Keyword arguments to pass to C{callable}.
@return: An opaque handle which may be passed to L{removeTrigger} to
reverse the effects of calling this method.
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addTrigger\ s
z_ThreePhaseEvent.addTriggerc C s t | d| j �|�S )aS
Remove a previously added trigger callable.
@param handle: An object previously returned by L{addTrigger}. The
trigger added by that call will be removed.
@raise ValueError: If the trigger associated with C{handle} has already
been removed or if C{handle} is not a valid handle.
ZremoveTrigger_)r� r� )r5 �handler8 r8 r9 �
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Just try to remove the trigger.
@see: removeTrigger
zinvalid trigger handler� r� N)� TypeError�
ValueErrorru r� �remove�r5 r� r� r� r* r� r8 r8 r9 �removeTrigger_BASE| s z#_ThreePhaseEvent.removeTrigger_BASEc C sN |\}}}}|dkr | � |�S |||f| jkr@tjdtdd� n
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Remove the trigger if it has yet to be executed, otherwise emit a
warning that in the future an exception will be raised when removing an
already-executed trigger.
@see: removeTrigger
r� zdRemoving already-fired system event triggers will raise an exception in a future version of Twisted.r{ )�category�
stacklevelN)r� �finishedBefore�warnings�warn�DeprecationWarningr� r8 r8 r9 �removeTrigger_BEFORE� s
�z%_ThreePhaseEvent.removeTrigger_BEFOREc C s� d| _ g | _g }| jrt| j�d�\}}}| j�|||f� z|||�}W n t�� Y qX t|t�r|�|� qt |��
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Call the triggers added to this event.
ZBEFOREr N) r� r� r� �popr_ r rn rv r" r# Z addCallback�_continueFiring)r5 Z
beforeResultsr� r* r� rx r8 r8 r9 � fireEvent� s
z_ThreePhaseEvent.fireEventc C s\ d| _ g | _| j| jfD ]>}|r|�d�\}}}z|||� W q t�� Y q X q qdS )zJ
Call the during and after phase triggers for this event.
r� r N)r� r� r� r� r� r rn )r5 Zignoredr� r� r* r� r8 r8 r9 r� � s z _ThreePhaseEvent._continueFiringN) rM re rL r� r: r� r� r� r� r� r� r8 r8 r8 r9 r� 8 s
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Default base class for Reactors.
@type _stopped: C{bool}
@ivar _stopped: A flag which is true between paired calls to C{reactor.run}
and C{reactor.stop}. This should be replaced with an explicit state
machine.
@type _justStopped: C{bool}
@ivar _justStopped: A flag which is true between the time C{reactor.stop}
is called and the time the shutdown system event is fired. This is
used to determine whether that event should be fired after each
iteration through the mainloop. This should be replaced with an
explicit state machine.
@type _started: C{bool}
@ivar _started: A flag which is true from the time C{reactor.run} is called
until the time C{reactor.run} returns. This is used to prevent calls
to C{reactor.run} on a running reactor. This should be replaced with
an explicit state machine.
@ivar running: See L{IReactorCore.running}
@ivar _registerAsIOThread: A flag controlling whether the reactor will
register the thread it is running in as the I/O thread when it starts.
If C{True}, registration will be done, otherwise it will not be.
@ivar _exitSignal: See L{_ISupportsExitSignalCapturing._exitSignal}
TFN�twisted.internet.reactorc C s� g | _ i | _g | _g | _d| _d| _d| _d| _d| _t � | _
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dd| j� t�� r�| �� | �� d S )Nr Fr� �startup�shutdown)�threadCallQueue�_eventTriggers�_pendingTimedCalls�_newTimedCalls�_cancellations�running�_started� _justStopped�_startedBefore�setZ_internalReaders�
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disconnectAllr! �supportsThreads� _initThreads� installWakerr< r8 r8 r9 r: � s, �zReactorBase.__init__c C s t t�| j�d ��d S )Nz did not implement installWaker��NotImplementedErrorr �qual� __class__r< r8 r8 r9 r� s �zReactorBase.installWakerc C s( t �|�st�| j}|| _t|�| _|S )z�
See L{IReactorPluggableResolver}.
@param resolver: see L{IReactorPluggableResolver}.
@return: see L{IReactorPluggableResolver}.
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providedBy�AssertionError�resolver�_SimpleResolverComplexifierr� )r5 r� Z oldResolverr8 r8 r9 �installResolver s
zReactorBase.installResolverc C s | j }|| _ t|�| _|S )z�
See L{IReactorPluggableNameResolver}.
@param resolver: See L{IReactorPluggableNameResolver}.
@return: see L{IReactorPluggableNameResolver}.
)r� �_ComplexResolverSimplifierr� )r5 r� ZpreviousNameResolverr8 r8 r9 �installNameResolver# s
z ReactorBase.installNameResolverc C s | j S )zd
Implementation of read-only
L{IReactorPluggableNameResolver.nameResolver}.
)r� r< r8 r8 r9 � nameResolver1 s zReactorBase.nameResolverc C s | j r| j �� dS )z)
Wake up the event loop.
N)r� �wakeUpr< r8 r8 r9 r� : s zReactorBase.wakeUpc C s t t�| j�d ��dS )zV
Do one iteration over the readers and writers which have been added.
z did not implement doIterationNr� �r5 rD r8 r8 r9 � doIterationC s �zReactorBase.doIterationc C s t t�| j�d ��d S )Nz did not implement addReaderr� �r5 �readerr8 r8 r9 � addReaderJ s �zReactorBase.addReaderc C s t t�| j�d ��d S )Nz did not implement addWriterr� �r5 �writerr8 r8 r9 � addWriterN s �zReactorBase.addWriterc C s t t�| j�d ��d S )Nz did not implement removeReaderr� r� r8 r8 r9 � removeReaderR s �zReactorBase.removeReaderc C s t t�| j�d ��d S )Nz did not implement removeWriterr� r� r8 r8 r9 � removeWriterV s �zReactorBase.removeWriterc C s t t�| j�d ��d S )Nz did not implement removeAllr� r< r8 r8 r9 � removeAllZ s �zReactorBase.removeAllc C s t t�| j�d ��d S )Nz did not implement getReadersr� r< r8 r8 r9 �
getReaders_ s �zReactorBase.getReadersc C s t t�| j�d ��d S )Nz did not implement getWritersr� r< r8 r8 r9 �
getWritersd s �zReactorBase.getWritersrz c C s0 |st �d�S t�|�r"t �|�S | j�||�S )z8Return a Deferred that will resolve a hostname.
z0.0.0.0)r r� r Z isIPAddressr� r� )r5 rm r� r8 r8 r9 �resolvei s
zReactorBase.resolvec C s& | j rt�d��d| _ d| _d| _dS )zD
See twisted.internet.interfaces.IReactorCore.stop.
z&Can't stop reactor that isn't running.TN)�_stoppedr ZReactorNotRunningr� r� r< r8 r8 r9 �stopv s �zReactorBase.stopc C s d| _ d| _| �dd| j� dS )z�
See twisted.internet.interfaces.IReactorCore.crash.
Reset reactor state tracking attributes and re-initialize certain
state-transition helpers which were set up in C{__init__} but later
destroyed (through use).
Fr� r� N)r� r� r� r� r< r8 r8 r9 r� � s �zReactorBase.crashc G s$ t �d� | �| j� |d | _dS )zp
Handle a SIGINT interrupt.
@param args: See handler specification in L{signal.signal}
z Received SIGINT, shutting down.r N�r r� �callFromThreadr� � _exitSignal�r5 r* r8 r8 r9 �sigInt� s
zReactorBase.sigIntc G s$ t �d� | �| j� |d | _dS )zr
Handle a SIGBREAK interrupt.
@param args: See handler specification in L{signal.signal}
z!Received SIGBREAK, shutting down.r Nr� r� r8 r8 r9 �sigBreak� s
zReactorBase.sigBreakc G s$ t �d� | �| j� |d | _dS )zq
Handle a SIGTERM interrupt.
@param args: See handler specification in L{signal.signal}
z Received SIGTERM, shutting down.r Nr� r� r8 r8 r9 �sigTerm� s
zReactorBase.sigTermc C s. | � � }|D ] }t�||jt�tj�� q dS )z;Disconnect every reader, and writer in the system.
N)r� r ZcallWithLogger�connectionLostr rl r ZCONNECTION_LOST)r5 Z selectablesr� r8 r8 r9 r� � s
�zReactorBase.disconnectAllr c C s | � � | �|� dS )z>See twisted.internet.interfaces.IReactorCore.iterate.
N)�runUntilCurrentr� r� r8 r8 r9 �iterate� s zReactorBase.iteratec C s | j �|�}|dk r |�� dS )zFSee twisted.internet.interfaces.IReactorCore.fireSystemEvent.
N)r� �getr� )r5 � eventTypeZeventr8 r8 r9 �fireSystemEvent� s zReactorBase.fireSystemEventc O sH t |�std| ��|| jkr*t� | j|< || j| j||f|�|�fS )zLSee twisted.internet.interfaces.IReactorCore.addSystemEventTrigger.
�%s is not callable)r� r� r� r� r� )r5 Z_phaseZ
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���z!ReactorBase.addSystemEventTriggerc C s |\}}| j | �|� dS )zOSee twisted.internet.interfaces.IReactorCore.removeSystemEventTrigger.
N)r� r� )r5 Z triggerIDr� r� r8 r8 r9 �removeSystemEventTrigger� s z$ReactorBase.removeSystemEventTriggerc O s, | j r|||� n| jdd|f|�|�S dS )zFSee twisted.internet.interfaces.IReactorCore.callWhenRunning.
r� r� N)r� r� )r5 � _callabler* r+ r8 r8 r9 �callWhenRunning� s ���zReactorBase.callWhenRunningc C sD | j rt�� �| jr t�� �d| _ d| _| jr6t�� | � d� dS )a�
Method called when reactor starts: do some initialization and fire
startup events.
Don't call this directly, call reactor.run() instead: it should take
care of calling this.
This method is somewhat misnamed. The reactor will not necessarily be
in the running state by the time this method returns. The only
guarantee is that it will be on its way to the running state.
TFr� N)
r� r ZReactorAlreadyRunningr� ZReactorNotRestartabler� �_registerAsIOThreadr% ZregisterAsIOThreadr� r< r8 r8 r9 � startRunning� s zReactorBase.startRunningc C s
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Method called to transition to the running state. This should happen
in the I{during startup} event trigger phase.
TN)r� r< r8 r8 r9 r� � s z ReactorBase._reallyStartRunningc O s^ t |�std| ��|dks*td|f ��t| �� | |||| j| j| jd�}| j�|� |S )z@See twisted.internet.interfaces.IReactorTime.callLater.
r� r z,%s is not greater than or equal to 0 seconds)r )r� r� r& r �_cancelCallLater�_moveCallLaterSoonerr� r_ )r5 Z_secondsr� r* r+ �tpler8 r8 r9 r� s
�� zReactorBase.callLaterc C sr | j }zR|�|�}|| }|dkrN|d d }|| |kr<qN|| ||< |}q|||< W n tk
rl Y nX d S )Nr r> � )r� �indexr� )r5 r� �heap�posZelt�parentr8 r8 r9 r� s
z ReactorBase._moveCallLaterSoonerc C s | j d7 _ d S �Nr> )r� )r5 r� r8 r8 r9 r� & s z ReactorBase._cancelCallLaterc C s dd� | j | j D �S )a3
Return all the outstanding delayed calls in the system.
They are returned in no particular order.
This method is not efficient -- it is really only meant for
test cases.
@return: A list of outstanding delayed calls.
@type: L{list} of L{DelayedCall}
c S s g | ]}|j s|�qS r8 �r. �rT �xr8 r8 r9 rV 4 s z/ReactorBase.getDelayedCalls.<locals>.<listcomp>)r� r� r< r8 r8 r9 �getDelayedCalls* s
zReactorBase.getDelayedCallsc C s@ | j D ].}|jr | jd8 _q|�� t| j|� qg | _ d S r� )r� r. r� rC r r� )r5 �callr8 r8 r9 �_insertNewDelayedCalls7 s
z"ReactorBase._insertNewDelayedCallsc C s: | � � | jsdS | jd j| �� }d}tdt||��S )a
Determine the longest time the reactor may sleep (waiting on I/O
notification, perhaps) before it must wake up to service a time-related
event.
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