WeakRefRef

public struct WeakRefRef : WeakRefProtocol

The WeakRefRef type acts as a lightweight Swift reference to an underlying GWeakRef instance. It exposes methods that can operate on this data type through WeakRefProtocol conformance. Use WeakRefRef only as an unowned reference to an existing GWeakRef instance.

A structure containing a weak reference to a GObject. It can either be empty (i.e. point to nil), or point to an object for as long as at least one “strong” reference to that object exists. Before the object’s GObjectClass.dispose method is called, every GWeakRef associated with becomes empty (i.e. points to nil).

Like GValue, GWeakRef can be statically allocated, stack- or heap-allocated, or embedded in larger structures.

Unlike g_object_weak_ref() and g_object_add_weak_pointer(), this weak reference is thread-safe: converting a weak pointer to a reference is atomic with respect to invalidation of weak pointers to destroyed objects.

If the object’s GObjectClass.dispose method results in additional references to the object being held, any GWeakRefs taken before it was disposed will continue to point to nil. If GWeakRefs are taken after the object is disposed and re-referenced, they will continue to point to it until its refcount goes back to zero, at which point they too will be invalidated.

  • ptr
    Untyped pointer to the underlying `GWeakRef` instance.
    

    For type-safe access, use the generated, typed pointer _ptr property instead.

    Declaration

    Swift

    public let ptr: UnsafeMutableRawPointer!

WeakRef Record

  • Designated initialiser from the underlying C data type

    Declaration

    Swift

    @inlinable
    init(_ p: UnsafeMutablePointer<GWeakRef>)
  • Designated initialiser from a constant pointer to the underlying C data type

    Declaration

    Swift

    @inlinable
    init(_ p: UnsafePointer<GWeakRef>)
  • Conditional initialiser from an optional pointer to the underlying C data type

    Declaration

    Swift

    @inlinable
    init!(_ maybePointer: UnsafeMutablePointer<GWeakRef>?)
  • Conditional initialiser from an optional, non-mutable pointer to the underlying C data type

    Declaration

    Swift

    @inlinable
    init!(_ maybePointer: UnsafePointer<GWeakRef>?)
  • Conditional initialiser from an optional gpointer

    Declaration

    Swift

    @inlinable
    init!(gpointer g: gpointer?)
  • Conditional initialiser from an optional, non-mutable gconstpointer

    Declaration

    Swift

    @inlinable
    init!(gconstpointer g: gconstpointer?)
  • Reference intialiser for a related type that implements WeakRefProtocol

    Declaration

    Swift

    @inlinable
    init<T>(_ other: T) where T : WeakRefProtocol
  • Unsafe typed initialiser. Do not use unless you know the underlying data type the pointer points to conforms to WeakRefProtocol.

    Declaration

    Swift

    @inlinable
    init<T>(cPointer: UnsafeMutablePointer<T>)
  • Unsafe typed initialiser. Do not use unless you know the underlying data type the pointer points to conforms to WeakRefProtocol.

    Declaration

    Swift

    @inlinable
    init<T>(constPointer: UnsafePointer<T>)
  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to WeakRefProtocol.

    Declaration

    Swift

    @inlinable
    init(mutating raw: UnsafeRawPointer)
  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to WeakRefProtocol.

    Declaration

    Swift

    @inlinable
    init(raw: UnsafeMutableRawPointer)
  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to WeakRefProtocol.

    Declaration

    Swift

    @inlinable
    init(opaquePointer: OpaquePointer)