Function

GLibunix_fd_add

since: 2.36

Declaration [src]

guint
g_unix_fd_add (
  gint fd,
  GIOCondition condition,
  GUnixFDSourceFunc function,
  gpointer user_data
)

Description [src]

Sets a function to be called when the IO condition, as specified by condition becomes true for fd.

function will be called when the specified IO condition becomes TRUE. The function is expected to clear whatever event caused the IO condition to become true and return TRUE in order to be notified when it happens again. If function returns FALSE then the watch will be cancelled.

The return value of this function can be passed to g_source_remove() to cancel the watch at any time that it exists.

The source will never close the fd — you must do it yourself.

Available since: 2.36

This function is not directly available to language bindings.

Parameters

fd

Type: gint

A file descriptor.

condition

Type: GIOCondition

IO conditions to watch for on fd.

function

Type: GUnixFDSourceFunc

A GUnixFDSourceFunc.

user_data

Type: gpointer

Data to pass to function.

The argument can be NULL.

The data is owned by the caller of the function.

Return value

Type: guint

The ID (greater than 0) of the event source.