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dadadd� ZdS )a/ Drop-in replacement for the thread module.
Meant to be used as a brain-dead substitute so that threaded code does
not need to be rewritten for when the thread module is not present.
Suggested usage is::
try:
import _thread
except ImportError:
import _dummy_thread as _thread
�error�start_new_thread�exit� get_ident�
allocate_lock�interrupt_main�LockType�RLockl c C s� t |�t t� �krtd��t |�t t� �kr4td��day| ||� W n. tk
rZ Y n ddl}|�� Y nX datr�dat �dS )a� Dummy implementation of _thread.start_new_thread().
Compatibility is maintained by making sure that ``args`` is a
tuple and ``kwargs`` is a dictionary. If an exception is raised
and it is SystemExit (which can be done by _thread.exit()) it is
caught and nothing is done; all other exceptions are printed out
by using traceback.print_exc().
If the executed function calls interrupt_main the KeyboardInterrupt will be
raised when the function returns.
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only thread. Thus a constant can be safely returned.
� r r r r r r A s c C s t � S )z0Dummy implementation of _thread.allocate_lock().)r r r r r r J s Nc C s | dk rt d��dS )z-Dummy implementation of _thread.stack_size().Nz'setting thread stack size not supportedr )r )�sizer r r �
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the lock, though, should not be done since if the _thread module is
then used with an unpickled ``lock()`` from here problems could
occur from this class not having atomic methods.
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locked_status)�selfr r r �__init__c s zLockType.__init__N���c C sH |dks |rd| _ dS | j s&d| _ dS |dkr@ddl}|�|� dS dS )a� Dummy implementation of acquire().
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``waitflag``. If it is non-blocking, then the value is
actually checked and not set if it is already acquired. This
is all done so that threading.Condition's assert statements
aren't triggered and throw a little fit.
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t�d| _ dS )zRelease the dummy lock.FT)r r )r r r r r$ � s zLockType.releasec C s | j S )N)r )r r r r �locked� s zLockType.lockedc C s* d| j r dnd| jj| jjtt| ��f S )Nz<%s %s.%s object at %s>r) Zunlocked)r � __class__�
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� fdd� Z� fdd �Z� ZS ) r a Dummy implementation of threading._RLock.
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just as many times. This dummy implemention does not check wheter the
current thread actually owns the lock, but does accounting on the call
counts.
c s t � �� d| _d S )Nr )�superr �_levels)r )r* r r r � s
zRLock.__init__Nr c s$ t � �||�}|r | jd7 _|S )zEAquire the lock, can be called multiple times in succession.
r )r3 r# r4 )r r! r" r) )r* r r r# � s z
RLock.acquirec s4 | j dkrt�| j dkr"t� �� | j d8 _ dS )zERelease needs to be called once for every call to acquire().
r r N)r4 r r3 r$ )r )r* r r r$ � s
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RLock.release)Nr )r0 r+ r, r1 r r# r$ �
__classcell__r r )r* r r � s FTc C s t r
t�ndadS )z^Set _interrupt flag to True to have start_new_thread raise
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