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ThreadManagera� A singleton class for managing threads and processes.
Notes:
THE INSTANCE HAS TO BE CREATED IN THE MAIN THREAD!
This manager makes one assumption that contradicts python's
threading module documentation. In this class, we assume that thread
names are unique and meaningful. This is an okay assumption for us
to make given that anaconda is only ever going to have a handful of
special purpose threads.
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�objr r r �add3 s zThreadManager.addc C s" | j � | jj|� W dQ R X dS )z�Removes a thread from the list of known objects. This should only
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r r r �in_main_thread� s z ThreadManager.in_main_threadc C s | j � t| j�S Q R X dS )zz Return the number of running threads.
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r r r �running� s zThreadManager.runningc C s | j � t| jj� �S Q R X dS )z� Return the names of the running threads.
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:rtype: list of strings
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Waits for all threads that caused exceptions. In other words, waits for
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� Z S ) �AnacondaThreada� A threading.Thread subclass that exists only for a couple purposes:
(1) Make exceptions that happen in a thread invoke our exception handling
code as well. Otherwise, threads will silently die and we are doing
a lot of complicated code in them now.
(2) Remove themselves from the thread manager when completed.
(3) All created threads are made daemonic, which means anaconda will quit
when the main process is killed.
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