/snap/core18/2999/usr/lib/python3.6/__pycache__
Edit: /snap/core18/2999/usr/lib/python3.6/__pycache__/selectors.cpython-36.pyc (17697B)
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This module allows high-level and efficient I/O multiplexing, built upon the
`select` module primitives.
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dS ) BaseSelectora- Selector abstract base class.
A selector supports registering file objects to be monitored for specific
I/O events.
A file object is a file descriptor or any object with a `fileno()` method.
An arbitrary object can be attached to the file object, which can be used
for example to store context information, a callback, etc.
A selector can use various implementations (select(), poll(), epoll()...)
depending on the platform. The default `Selector` class uses the most
efficient implementation on the current platform.
Nc C s t dS )a3 Register a file object.
Parameters:
fileobj -- file object or file descriptor
events -- events to monitor (bitwise mask of EVENT_READ|EVENT_WRITE)
data -- attached data
Returns:
SelectorKey instance
Raises:
ValueError if events is invalid
KeyError if fileobj is already registered
OSError if fileobj is closed or otherwise is unacceptable to
the underlying system call (if a system call is made)
Note:
OSError may or may not be raised
N)NotImplementedError)r r r r r r r register^ s zBaseSelector.registerc C s t dS )aj Unregister a file object.
Parameters:
fileobj -- file object or file descriptor
Returns:
SelectorKey instance
Raises:
KeyError if fileobj is not registered
Note:
If fileobj is registered but has since been closed this does
*not* raise OSError (even if the wrapped syscall does)
N)r) )r r r r r
unregisteru s zBaseSelector.unregisterc C s | j | | j|||S )ay Change a registered file object monitored events or attached data.
Parameters:
fileobj -- file object or file descriptor
events -- events to monitor (bitwise mask of EVENT_READ|EVENT_WRITE)
data -- attached data
Returns:
SelectorKey instance
Raises:
Anything that unregister() or register() raises
)r+ r* )r r r r r r r modify s
zBaseSelector.modifyc C s t dS )aq Perform the actual selection, until some monitored file objects are
ready or a timeout expires.
Parameters:
timeout -- if timeout > 0, this specifies the maximum wait time, in
seconds
if timeout <= 0, the select() call won't block, and will
report the currently ready file objects
if timeout is None, select() will block until a monitored
file object becomes ready
Returns:
list of (key, events) for ready file objects
`events` is a bitwise mask of EVENT_READ|EVENT_WRITE
N)r) )r timeoutr r r select s zBaseSelector.selectc C s dS )zmClose the selector.
This must be called to make sure that any underlying resource is freed.
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rD tdj|dY nX dS )zzReturn the key associated to a registered file object.
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