# ``twisted`.`internet`.`gtk3reactor`.`Gtk3Reactor``

class documentation

`class Gtk3Reactor(gireactor.GIReactor): (source)`

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A reactor using the gtk3+ event loop.

Method | `__init__` | Override init to set the `useGtk` flag.

Inherited from `GIReactor`:

Method | `registerGApplication` | Register a `Gio.Application` or `Gtk.Application`, whose main loop will be used instead of the default one.
Constant | `INFLAGS` | Undocumented
Constant | `OUTFLAGS` | Undocumented
Constant | `_POLL_DISCONNECTED` | Undocumented
Instance Variable | `_crash` | Undocumented
Instance Variable | `_gapplication` | A `Gio.Application` instance that was registered with `registerGApplication`.
Instance Variable | `_run` | Undocumented

Inherited from `GlibReactorBase` (via `GIReactor`):

Method | `addReader` | Add a `FileDescriptor` for monitoring of data available to read.
Method | `addWriter` | Add a `FileDescriptor` for monitoring ability to write data.
Method | `callLater` | Schedule a `DelayedCall`.
Method | `crash` | Crash the reactor.
Method | `getReaders` | Retrieve the list of current `FileDescriptor` monitored for reading.
Method | `getWriters` | Retrieve the list of current `FileDescriptor` monitored for writing.
Method | `input_add` | Undocumented
Method | `iterate` | One iteration of the event loop, for trial's use.
Method | `removeAll` | Remove monitoring for all registered `FileDescriptor`s.
Method | `removeReader` | Stop monitoring the given `FileDescriptor` for reading.
Method | `removeWriter` | Stop monitoring the given `FileDescriptor` for writing.
Method | `run` | Run the reactor.
Method | `stop` | Stop the reactor.
Instance Variable | `context` | Undocumented
Instance Variable | `loop` | Undocumented
Method | `_add` | No summary
Method | `_handleSignals` | Extend the basic signal handling logic to also support handling SIGCHLD to know when to try to reap child processes.
Method | `_ioEventCallback` | Called by event loop when an I/O event occurs.
Method | `_remove` | Remove monitoring the given `FileDescriptor` for either reading or writing. If it's still monitored for the other operation, we re-register the `FileDescriptor` for only that operation.
Method | `_reschedule` | Schedule a glib timeout for `_simulate`.
Method | `_simulate` | Run timers, and then reschedule glib timeout for next scheduled event.
Instance Variable | `_glib` | Undocumented
Instance Variable | `_gtk` | Undocumented
Instance Variable | `_iteration` | Undocumented
Instance Variable | `_pending` | Undocumented
Instance Variable | `_reads` | A set of `FileDescriptor` instances currently monitored for reading.
Instance Variable | `_simtag` | A GSource handle for the next `simulate` call.
Instance Variable | `_source_remove` | Undocumented
Instance Variable | `_sources` | A dictionary mapping `FileDescriptor` instances to GSource handles.
Instance Variable | `_timeout_add` | Undocumented
Instance Variable | `_writes` | A set of `FileDescriptor` instances currently monitored for writing.

Inherited from `PosixReactorBase` (via `GIReactor`, `GlibReactorBase`):

Method | `adoptDatagramPort` | Add an existing listening SOCK_DGRAM socket to the reactor to monitor for read and write readiness.
Method | `adoptStreamConnection` |
Method | `adoptStreamPort` | Create a new `IListeningPort` from an already-initialized socket.
Method | `connectSSL` | Connect a client Protocol to a remote SSL socket.
Method | `connectTCP` | Connect a TCP client.
Method | `connectUNIX` | Connect a client protocol to a UNIX socket.
Method | `connectUNIXDatagram` | Connects a `ConnectedDatagramProtocol` instance to a path.
Method | `installWaker` | Install a `waker' to allow threads and signals to wake up the IO thread.
Method | `listenMulticast` | Connects a given DatagramProtocol to the given numeric UDP port.
Method | `listenSSL` | Connects a given protocol factory to the given numeric TCP/IP port. The connection is a SSL one, using contexts created by the context factory.
Method | `listenTCP` | Connects a given protocol factory to the given numeric TCP/IP port.
Method | `listenUDP` | Connects a given `DatagramProtocol` to the given numeric UDP port.
Method | `listenUNIX` | Listen on a UNIX socket.
Method | `listenUNIXDatagram` | Connects a given `DatagramProtocol` to the given path.
Method | `spawnProcess` | Spawn a process, with a process protocol.
Instance Variable | `waker` | Undocumented
Method | `_removeAll` | Remove all readers and writers, and list of removed `IReadDescriptor`s and `IWriteDescriptor`s.
Method | `_uninstallHandler` | If a child waker was created and installed, uninstall it now.
Class Variable | `_supportedAddressFamilies` | Undocumented
Instance Variable | `_childWaker` | `None` or a reference to the `_SIGCHLDWaker` which is used to properly notice child process termination.

Inherited from `_SignalReactorMixin` (via `GIReactor`, `GlibReactorBase`, `PosixReactorBase`):

Method | `mainLoop` | Undocumented
Method | `startRunning` | Extend the base implementation in order to remember whether signal handlers should be installed later.
Method | `_reallyStartRunning` | Extend the base implementation by also installing signal handlers, if `self._installSignalHandlers` is true.
Instance Variable | `_installSignalHandlers` | A flag which indicates whether any signal handlers will be installed during startup. This includes handlers for SIGCHLD to monitor child processes, and SIGINT, SIGTERM, and SIGBREAK to stop the reactor.

Inherited from `_DisconnectSelectableMixin` (via `GIReactor`, `GlibReactorBase`, `PosixReactorBase`):

Method | `_disconnectSelectable` | Utility function for disconnecting a selectable.

Inherited from `ReactorBase` (via `GIReactor`, `GlibReactorBase`, `PosixReactorBase`):

Method | `addSystemEventTrigger` | See twisted.internet.interfaces.IReactorCore.addSystemEventTrigger.
Method | `callFromThread` | Cause a function to be executed by the reactor thread.
Method | `callInThread` | See `twisted.internet.interfaces.IReactorInThreads.callInThread`.
Method | `callWhenRunning` | See twisted.internet.interfaces.IReactorCore.callWhenRunning.
Method | `disconnectAll` | Disconnect every reader, and writer in the system.
Method | `doIteration` | Do one iteration over the readers and writers which have been added.
Method | `fireSystemEvent` | See twisted.internet.interfaces.IReactorCore.fireSystemEvent.
Method | `getDelayedCalls` | See `twisted.internet.interfaces.IReactorTime.getDelayedCalls`
Method | `getThreadPool` | See `twisted.internet.interfaces.IReactorThreads.getThreadPool`.
Method | `removeSystemEventTrigger` | See twisted.internet.interfaces.IReactorCore.removeSystemEventTrigger.
Method | `resolve` | Return a Deferred that will resolve a hostname.
Method | `runUntilCurrent` | Run all pending timed calls.
Method | `sigBreak` | Handle a SIGBREAK interrupt.
Method | `sigInt` | Handle a SIGINT interrupt.
Method | `sigTerm` | Handle a SIGTERM interrupt.
Method | `startRunning` | Method called when reactor starts: do some initialization and fire startup events.
Method | `suggestThreadPoolSize` | See `twisted.internet.interfaces.IReactorThreads.suggestThreadPoolSize`.
Method | `timeout` | Determine the longest time the reactor may sleep (waiting on I/O notification, perhaps) before it must wake up to service a time-related event.
Method | `wakeUp` | Wake up the event loop.
Class Variable | `__name__` | Undocumented
Class Variable | `installed` | Undocumented
Class Variable | `seconds` | Get the current time in seconds.
Instance Variable | `running` | See `IReactorCore.running`
Instance Variable | `threadCallQueue` | Undocumented
Instance Variable | `threadpool` | Undocumented
Instance Variable | `threadpoolShutdownID` | Undocumented
Instance Variable | `usingThreads` | Undocumented
Method | `_cancelCallLater` | Undocumented
Method | `_initThreadPool` | Create the threadpool accessible with callFromThread.
Method | `_initThreads` | Undocumented
Method | `_insertNewDelayedCalls` | Undocumented
Method | `_moveCallLaterSooner` | Undocumented
Method | `_reallyStartRunning` | Method called to transition to the running state. This should happen in the during startup event trigger phase.
Method | `_stopThreadPool` | No summary
Class Variable | `_lock` | Undocumented
Instance Variable | `_cancellations` | Undocumented
Instance Variable | `_eventTriggers` | Undocumented
Instance Variable | `_exitSignal` | See `_ISupportsExitSignalCapturing._exitSignal`
Instance Variable | `_internalReaders` | Undocumented
Instance Variable | `_justStopped` | A flag which is true between the time `reactor.stop` is called and the time the shutdown system event is fired. This is used to determine whether that event should be fired after each iteration through the mainloop. This should be replaced with an explicit state machine.
Instance Variable | `_newTimedCalls` | Undocumented
Instance Variable | `_pendingTimedCalls` | Undocumented
Instance Variable | `_registerAsIOThread` | A flag controlling whether the reactor will register the thread it is running in as the I/O thread when it starts. If `True`, registration will be done, otherwise it will not be.
Instance Variable | `_started` | A flag which is true from the time `reactor.run` is called until the time `reactor.run` returns. This is used to prevent calls to `reactor.run` on a running reactor. This should be replaced with an explicit state machine.
Instance Variable | `_startedBefore` | Undocumented
Instance Variable | `_stopped` | A flag which is true between paired calls to `reactor.run` and `reactor.stop`. This should be replaced with an explicit state machine.
Instance Variable | `_threadpoolStartupID` | Undocumented

Inherited from `PluggableResolverMixin` (via `GIReactor`, `GlibReactorBase`, `PosixReactorBase`, `ReactorBase`):

Method | `installNameResolver` | See `IReactorPluggableNameResolver`.
Method | `installResolver` | See `IReactorPluggableResolver`.
Instance Variable | `resolver` | The installed `IResolverSimple`.
Property | `nameResolver` | Implementation of read-only `IReactorPluggableNameResolver.nameResolver`.
Instance Variable | `_nameResolver` | The installed `IHostnameResolver`.

Inherited from `_PollLikeMixin` (via `GIReactor`, `GlibReactorBase`):

Method | `_doReadOrWrite` | fd is available for read or write, do the work and raise errors if necessary.

def __init__(self): (source)
overrides `twisted.internet.gireactor.GIReactor.__init__`
Override init to set the `useGtk` flag.