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dadd� ZdS )a/ Drop-in replacement for the thread module.
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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
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allocate_lock�interrupt_main�LockType� � c C s� t |�t t� �krtd��t |�t t� �kr4td��day| ||� W n. tk
rZ Y n ddl}|j� 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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available, it is safe to assume that the current process is the
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
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which is a boolean that stores the state of the lock. Pickling of
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__Nr c C sH |dks |rd| _ dS | j s&d| _ dS |dkr@ddl}|j|� dS dS )a� Dummy implementation of acquire().
For blocking calls, self.locked_status is automatically set to
True and returned appropriately based on value of
``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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zLockType.acquirec C s | j � d S )N)�release)r �typ�val�tbr r r �__exit__� s zLockType.__exit__c C s | j s
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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