# ``twisted`.`internet`.`posixbase`.`_FDWaker``

class documentation

`class _FDWaker(log.Logger): (source)`

Known subclasses: `twisted.internet.posixbase._SIGCHLDWaker`, `twisted.internet.posixbase._UnixWaker`

View In Hierarchy

The self-pipe trick<http://cr.yp.to/docs/selfpipe.html>, used to wake up the main loop from another thread or a signal handler.

`_FDWaker` is a base class for waker implementations based on writing to a pipe being monitored by the reactor.

Method | `__init__` | Initialize.
Method | `connectionLost` | Close both ends of my pipe.
Method | `doRead` | Read some bytes from the pipe and discard them.
Class Variable | `disconnected` | Undocumented
Instance Variable | `fileno` | Undocumented
Instance Variable | `i` | The file descriptor which should be monitored in order to be awoken by this waker.
Instance Variable | `o` | The file descriptor for the end of the pipe which can be written to wake up a reactor monitoring this waker.
Instance Variable | `reactor` | Undocumented

Inherited from `Logger`:

Method | `logPrefix` | Override this method to insert custom logging behavior. Its return value will be inserted in front of every line. It may be called more times than the number of output lines.

def __init__(self, reactor): (source)
overridden in `twisted.internet.posixbase._SIGCHLDWaker`
Initialize.
def connectionLost(self, reason): (source)
Close both ends of my pipe.
def doRead(self): (source)
overridden in `twisted.internet._glibbase.GlibWaker`, `twisted.internet.posixbase._SIGCHLDWaker`
Read some bytes from the pipe and discard them.
disconnected: `int` = (source)

Undocumented

fileno = (source)

Undocumented

i = (source)
The file descriptor which should be monitored in order to be awoken by this waker.
o = (source)
The file descriptor for the end of the pipe which can be written to wake up a reactor monitoring this waker.
reactor = (source)

Undocumented