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Z dS )r aH Abstract base class for monitoring child processes.
Objects derived from this class monitor a collection of subprocesses and
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its activity until the new process if fully registered (this is needed to
prevent a race condition in some implementations).
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with watcher:
proc = subprocess.Popen("sleep 1")
watcher.add_child_handler(proc.pid, callback)
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waitpid(-1), there should be only one active object per process.
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N)NotImplementedError)r re rA rB r r r rX s z&AbstractChildWatcher.add_child_handlerc C s
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t dS )zAttach the watcher to an event loop.
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z)_UnixDefaultEventLoopPolicy._init_watcherc s6 t j| | jdk r2ttj tjr2| jj| dS )zSet the event loop.
As a side effect, if a child watcher was set before, then calling
.set_event_loop() from the main thread will call .attach_loop(loop) on
the child watcher.
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z*_UnixDefaultEventLoopPolicy.set_event_loopc C s | j dkr| j | j S )zzGet the watcher for child processes.
If not yet set, a SafeChildWatcher object is automatically created.
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z-_UnixDefaultEventLoopPolicy.get_child_watcherc C s4 |dkst |tst| jdk r*| jj || _dS )z$Set the watcher for child processes.N)rK r rj r r% )r ra r r r set_child_watcher0 s
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logr __all__r ImportErrorr fspathrx AttributeErrorZBaseSelectorEventLoopr hasattrr r Z
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