GI.GLib.Structs.PollFD

Represents a file descriptor, which events to poll for, and which events occurred.

Exported types

newtype PollFD

Memory-managed wrapper type.

Constructors

PollFD (ManagedPtr PollFD)

Instances

Eq PollFD

Defined in GI.GLib.Structs.PollFD

Methods

(==) :: PollFD -> PollFD -> Bool

(/=) :: PollFD -> PollFD -> Bool

GBoxed PollFD

Defined in GI.GLib.Structs.PollFD

ManagedPtrNewtype PollFD

Defined in GI.GLib.Structs.PollFD

Methods

toManagedPtr :: PollFD -> ManagedPtr PollFD

TypedObject PollFD

Defined in GI.GLib.Structs.PollFD

Methods

glibType :: IO GType

HasParentTypes PollFD

Defined in GI.GLib.Structs.PollFD

tag ~ 'AttrSet => Constructible PollFD tag

Defined in GI.GLib.Structs.PollFD

Methods

new :: MonadIO m => (ManagedPtr PollFD -> PollFD) -> [AttrOp PollFD tag] -> m PollFD

IsGValue (Maybe PollFD)

Convert PollFD to and from GValue. See toGValue and fromGValue.

Defined in GI.GLib.Structs.PollFD

Methods

gvalueGType_ :: IO GType

gvalueSet_ :: Ptr GValue -> Maybe PollFD -> IO ()

gvalueGet_ :: Ptr GValue -> IO (Maybe PollFD)

type ParentTypes PollFD

Defined in GI.GLib.Structs.PollFD

type ParentTypes PollFD = '[] :: [Type]

newZeroPollFD :: MonadIO m => m PollFD

Construct a PollFD struct initialized to zero.

Methods

Properties

events

a bitwise combination from IOCondition, specifying which events should be polled for. Typically for reading from a file descriptor you would use IOConditionIn | IOConditionHup | IOConditionErr, and for writing you would use IOConditionOut | IOConditionErr.

getPollFDEvents :: MonadIO m => PollFD -> m Word16

Get the value of the “events” field. When overloading is enabled, this is equivalent to

get pollFD #events

setPollFDEvents :: MonadIO m => PollFD -> Word16 -> m ()

Set the value of the “events” field. When overloading is enabled, this is equivalent to

set pollFD [ #events := value ]

fd

the file descriptor to poll (or a HANDLE on Win32)

getPollFDFd :: MonadIO m => PollFD -> m Int32

Get the value of the “fd” field. When overloading is enabled, this is equivalent to

get pollFD #fd

setPollFDFd :: MonadIO m => PollFD -> Int32 -> m ()

Set the value of the “fd” field. When overloading is enabled, this is equivalent to

set pollFD [ #fd := value ]

revents

a bitwise combination of flags from IOCondition, returned from the poll() function to indicate which events occurred.

getPollFDRevents :: MonadIO m => PollFD -> m Word16

Get the value of the “revents” field. When overloading is enabled, this is equivalent to

get pollFD #revents

setPollFDRevents :: MonadIO m => PollFD -> Word16 -> m ()

Set the value of the “revents” field. When overloading is enabled, this is equivalent to

set pollFD [ #revents := value ]