Struct _GPollableOutputStreamInterface

#[repr(C)]
pub struct _GPollableOutputStreamInterface {
    pub g_iface: GTypeInterface,
    pub can_poll: Option<unsafe extern "C" fn(stream: *mut GPollableOutputStream) -> gboolean>,
    pub is_writable: Option<unsafe extern "C" fn(stream: *mut GPollableOutputStream) -> gboolean>,
    pub create_source: Option<unsafe extern "C" fn(stream: *mut GPollableOutputStream, cancellable: *mut GCancellable) -> *mut GSource>,
    pub write_nonblocking: Option<unsafe extern "C" fn(stream: *mut GPollableOutputStream, buffer: *const c_void, count: gsize, error: *mut *mut GError) -> gssize>,
    pub writev_nonblocking: Option<unsafe extern "C" fn(stream: *mut GPollableOutputStream, vectors: *const GOutputVector, n_vectors: gsize, bytes_written: *mut gsize, error: *mut *mut GError) -> GPollableReturn>,
}

GPollableOutputStreamInterface: @g_iface: The parent interface. @can_poll: Checks if the #GPollableOutputStream instance is actually pollable @is_writable: Checks if the stream is writable @create_source: Creates a #GSource to poll the stream @write_nonblocking: Does a non-blocking write or returns %G_IO_ERROR_WOULD_BLOCK @writev_nonblocking: Does a vectored non-blocking write, or returns %G_POLLABLE_RETURN_WOULD_BLOCK

The interface for pollable output streams.

The default implementation of @can_poll always returns %TRUE.

The default implementation of @write_nonblocking calls g_pollable_output_stream_is_writable(), and then calls g_output_stream_write() if it returns %TRUE. This means you only need to override it if it is possible that your @is_writable implementation may return %TRUE when the stream is not actually writable.

The default implementation of @writev_nonblocking calls g_pollable_output_stream_write_nonblocking() for each vector, and converts its return value and error (if set) to a #GPollableReturn. You should override this where possible to avoid having to allocate a #GError to return %G_IO_ERROR_WOULD_BLOCK.

Since: 2.28

Fields

g_iface: GTypeInterface

can_poll: Option<unsafe extern "C" fn(stream: *mut GPollableOutputStream) -> gboolean>

is_writable: Option<unsafe extern "C" fn(stream: *mut GPollableOutputStream) -> gboolean>

create_source: Option<unsafe extern "C" fn(stream: *mut GPollableOutputStream, cancellable: *mut GCancellable) -> *mut GSource>

write_nonblocking: Option<unsafe extern "C" fn(stream: *mut GPollableOutputStream, buffer: *const c_void, count: gsize, error: *mut *mut GError) -> gssize>

writev_nonblocking: Option<unsafe extern "C" fn(stream: *mut GPollableOutputStream, vectors: *const GOutputVector, n_vectors: gsize, bytes_written: *mut gsize, error: *mut *mut GError) -> GPollableReturn>

Trait Implementations

impl Clone for _GPollableOutputStreamInterface

fn clone(&self) -> _GPollableOutputStreamInterface

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for _GPollableOutputStreamInterface

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

Formats the value using the given formatter.

impl PartialEq for _GPollableOutputStreamInterface

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for _GPollableOutputStreamInterface

impl Eq for _GPollableOutputStreamInterface

impl StructuralPartialEq for _GPollableOutputStreamInterface