Struct gio::ThreadedSocketService

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pub struct ThreadedSocketService { /* private fields */ }
Expand description

A GThreadedSocketService is a simple subclass of SocketService that handles incoming connections by creating a worker thread and dispatching the connection to it by emitting the run signal] in the new thread.

The signal handler may perform blocking I/O and need not return until the connection is closed.

The service is implemented using a thread pool, so there is a limited amount of threads available to serve incoming requests. The service automatically stops the SocketService from accepting new connections when all threads are busy.

As with SocketService, you may connect to run, or subclass and override the default handler.

§Properties

§max-threads

The maximum number of threads handling clients for this service.

Readable | Writeable | Construct Only

SocketService

§active

Whether the service is currently accepting connections.

Readable | Writeable | Construct

SocketListener

§listen-backlog

The number of outstanding connections in the listen queue.

Readable | Writeable | Construct

§Signals

§run

The ::run signal is emitted in a worker thread in response to an incoming connection. This thread is dedicated to handling @connection and may perform blocking IO. The signal handler need not return until the connection is closed.

SocketService

§incoming

The ::incoming signal is emitted when a new incoming connection to @service needs to be handled. The handler must initiate the handling of @connection, but may not block; in essence, asynchronous operations must be used.

@connection will be unreffed once the signal handler returns, so you need to ref it yourself if you are planning to use it.

SocketListener

§event

Emitted when @listener’s activity on @socket changes state. Note that when @listener is used to listen on both IPv4 and IPv6, a separate set of signals will be emitted for each, and the order they happen in is undefined.

§Implements

ThreadedSocketServiceExt, SocketServiceExt, SocketListenerExt, [trait@glib::ObjectExt]

GLib type: GObject with reference counted clone semantics.

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impl ThreadedSocketService

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pub fn new(max_threads: Option<u32>) -> ThreadedSocketService

Creates a new #GThreadedSocketService with no listeners. Listeners must be added with one of the #GSocketListener “add” methods.

§max_threads

the maximal number of threads to execute concurrently handling incoming clients, -1 means no limit

§Returns

a new #GSocketService.

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impl ThreadedSocketService

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pub const NONE: Option<&'static ThreadedSocketService> = None

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impl Clone for ThreadedSocketService

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fn clone(&self) -> Self

Makes a clone of this shared reference.

This increments the strong reference count of the object. Dropping the object will decrement it again.

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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ThreadedSocketService

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl HasParamSpec for ThreadedSocketService

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type ParamSpec = ParamSpecObject

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type SetValue = ThreadedSocketService

Preferred value to be used as setter for the associated ParamSpec.
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type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, ThreadedSocketService>

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fn param_spec_builder() -> Self::BuilderFn

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impl Hash for ThreadedSocketService

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fn hash<H>(&self, state: &mut H)
where H: Hasher,

Hashes the memory address of this object.

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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for ThreadedSocketService

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fn cmp(&self, other: &Self) -> Ordering

Comparison for two GObjects.

Compares the memory addresses of the provided objects.

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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl ParentClassIs for ThreadedSocketService

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impl<OT: ObjectType> PartialEq<OT> for ThreadedSocketService

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fn eq(&self, other: &OT) -> bool

Equality for two GObjects.

Two GObjects are equal if their memory addresses are equal.

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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<OT: ObjectType> PartialOrd<OT> for ThreadedSocketService

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fn partial_cmp(&self, other: &OT) -> Option<Ordering>

Partial comparison for two GObjects.

Compares the memory addresses of the provided objects.

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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl StaticType for ThreadedSocketService

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fn static_type() -> Type

Returns the type identifier of Self.
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impl Eq for ThreadedSocketService

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impl IsA<SocketListener> for ThreadedSocketService

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impl IsA<SocketService> for ThreadedSocketService

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fn set_property(&self, property_name: &str, value: impl Into<Value>)

Sets the property property_name of the object to value value. Read more
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Return all ParamSpec of the properties of this object.
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fn freeze_notify(&self) -> PropertyNotificationFreezeGuard

Freeze all property notifications until the return guard object is dropped. Read more
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fn block_signal(&self, handler_id: &SignalHandlerId)

Block a given signal handler. Read more
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fn unblock_signal(&self, handler_id: &SignalHandlerId)

Unblock a given signal handler.
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fn stop_signal_emission(&self, signal_id: SignalId, detail: Option<Quark>)

Stop emission of the currently emitted signal.
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fn stop_signal_emission_by_name(&self, signal_name: &str)

Stop emission of the currently emitted signal by the (possibly detailed) signal name.
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fn connect<F>( &self, signal_name: &str, after: bool, callback: F, ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,

Connect to the signal signal_name on this object. Read more
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where F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,

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where F: Fn(&[Value]) -> Option<Value> + 'static,

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where F: Fn(&[Value]) -> Option<Value>,

Connect to the signal signal_name on this object. Read more
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unsafe fn connect_unsafe_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F, ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value>,

Connect to the signal signal_id on this object. Read more
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Connect a closure to the signal signal_name on this object. Read more
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Connect a closure to the signal signal_id on this object. Read more
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Limits the lifetime of closure to the lifetime of the object. When the object’s reference count drops to zero, the closure will be invalidated. An invalidated closure will ignore any calls to invoke_with_values, or invoke when using Rust closures.
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Emit signal by signal id. Read more
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Same as Self::emit but takes Value for the arguments.
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Emit signal by its name with details. Read more
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Emit signal by signal id with details. Read more
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Emit signal by signal id with details. Read more
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fn disconnect(&self, handler_id: SignalHandlerId)

Disconnect a previously connected signal handler.
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fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
where F: Fn(&T, &ParamSpec) + Send + Sync + 'static,

Connect to the notify signal of the object. Read more
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where F: Fn(&T, &ParamSpec) + 'static,

Connect to the notify signal of the object. Read more
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unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F, ) -> SignalHandlerId
where F: Fn(&T, &ParamSpec),

Connect to the notify signal of the object. Read more
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fn notify(&self, property_name: &str)

Notify that the given property has changed its value. Read more
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Notify that the given property has changed its value. Read more
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Downgrade this object to a weak reference.
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Add a callback to be notified when the Object is disposed.
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Bind property source_property on this object to the target_property on the target object. Read more
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fn ref_count(&self) -> u32

Returns the strong reference count of this object.
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unsafe fn run_dispose(&self)

Runs the dispose mechanism of the object. Read more
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impl<T> Property for T
where T: HasParamSpec,

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type Value = T

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impl<T> PropertyGet for T
where T: HasParamSpec,

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type Value = T

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fn get<R, F>(&self, f: F) -> R
where F: Fn(&<T as PropertyGet>::Value) -> R,

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impl<O> SocketListenerExt for O
where O: IsA<SocketListener>,

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fn accept( &self, cancellable: Option<&impl IsA<Cancellable>>, ) -> Result<(SocketConnection, Option<Object>), Error>

Blocks waiting for a client to connect to any of the sockets added to the listener. Returns a #GSocketConnection for the socket that was accepted. Read more
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fn accept_async<P: FnOnce(Result<(SocketConnection, Option<Object>), Error>) + 'static>( &self, cancellable: Option<&impl IsA<Cancellable>>, callback: P, )

This is the asynchronous version of g_socket_listener_accept(). Read more
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fn accept_future( &self, ) -> Pin<Box_<dyn Future<Output = Result<(SocketConnection, Option<Object>), Error>> + 'static>>

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fn accept_socket( &self, cancellable: Option<&impl IsA<Cancellable>>, ) -> Result<(Socket, Option<Object>), Error>

Blocks waiting for a client to connect to any of the sockets added to the listener. Returns the #GSocket that was accepted. Read more
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fn accept_socket_async<P: FnOnce(Result<(Socket, Option<Object>), Error>) + 'static>( &self, cancellable: Option<&impl IsA<Cancellable>>, callback: P, )

This is the asynchronous version of g_socket_listener_accept_socket(). Read more
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fn accept_socket_future( &self, ) -> Pin<Box_<dyn Future<Output = Result<(Socket, Option<Object>), Error>> + 'static>>

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fn add_address( &self, address: &impl IsA<SocketAddress>, type_: SocketType, protocol: SocketProtocol, source_object: Option<&impl IsA<Object>>, ) -> Result<SocketAddress, Error>

Creates a socket of type @type_ and protocol @protocol, binds it to @address and adds it to the set of sockets we’re accepting sockets from. Read more
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fn add_any_inet_port( &self, source_object: Option<&impl IsA<Object>>, ) -> Result<u16, Error>

Listens for TCP connections on any available port number for both IPv6 and IPv4 (if each is available). Read more
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fn add_inet_port( &self, port: u16, source_object: Option<&impl IsA<Object>>, ) -> Result<(), Error>

Helper function for g_socket_listener_add_address() that creates a TCP/IP socket listening on IPv4 and IPv6 (if supported) on the specified port on all interfaces. Read more
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fn add_socket( &self, socket: &impl IsA<Socket>, source_object: Option<&impl IsA<Object>>, ) -> Result<(), Error>

Adds @socket to the set of sockets that we try to accept new clients from. The socket must be bound to a local address and listened to. Read more
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fn close(&self)

Closes all the sockets in the listener.
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fn set_backlog(&self, listen_backlog: i32)

Sets the listen backlog on the sockets in the listener. This must be called before adding any sockets, addresses or ports to the #GSocketListener (for example, by calling g_socket_listener_add_inet_port()) to be effective. Read more
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fn listen_backlog(&self) -> i32

The number of outstanding connections in the listen queue.
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fn set_listen_backlog(&self, listen_backlog: i32)

The number of outstanding connections in the listen queue.
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fn connect_event<F: Fn(&Self, SocketListenerEvent, &Socket) + 'static>( &self, f: F, ) -> SignalHandlerId

Emitted when @listener’s activity on @socket changes state. Note that when @listener is used to listen on both IPv4 and IPv6, a separate set of signals will be emitted for each, and the order they happen in is undefined. Read more
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fn connect_listen_backlog_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

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impl<O> SocketServiceExt for O
where O: IsA<SocketService>,

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fn is_active(&self) -> bool

Check whether the service is active or not. An active service will accept new clients that connect, while a non-active service will let connecting clients queue up until the service is started. Read more
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fn start(&self)

Restarts the service, i.e. start accepting connections from the added sockets when the mainloop runs. This only needs to be called after the service has been stopped from g_socket_service_stop(). Read more
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fn stop(&self)

Stops the service, i.e. stops accepting connections from the added sockets when the mainloop runs. Read more
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fn set_active(&self, active: bool)

Whether the service is currently accepting connections.
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fn connect_incoming<F: Fn(&Self, &SocketConnection, Option<&Object>) -> bool + 'static>( &self, f: F, ) -> SignalHandlerId

The ::incoming signal is emitted when a new incoming connection to @service needs to be handled. The handler must initiate the handling of @connection, but may not block; in essence, asynchronous operations must be used. Read more
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fn connect_active_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId

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impl<T> StaticTypeExt for T
where T: StaticType,

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fn ensure_type()

Ensures that the type has been registered with the type system.
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impl<O> ThreadedSocketServiceExt for O

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fn max_threads(&self) -> i32

The maximum number of threads handling clients for this service.
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fn connect_run<F: Fn(&Self, &SocketConnection, Option<&Object>) -> bool + 'static>( &self, f: F, ) -> SignalHandlerId

The ::run signal is emitted in a worker thread in response to an incoming connection. This thread is dedicated to handling @connection and may perform blocking IO. The signal handler need not return until the connection is closed. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> TransparentType for T

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T> TryFromClosureReturnValue for T
where T: for<'a> FromValue<'a> + StaticType + 'static,

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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<'a, T, C, E> FromValueOptional<'a> for T
where T: FromValue<'a, Checker = C>, C: ValueTypeChecker<Error = ValueTypeMismatchOrNoneError<E>>, E: Error + Send + 'static,

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impl<Super, Sub> MayDowncastTo<Sub> for Super
where Super: IsA<Super>, Sub: IsA<Super>,